Suggestion: Rework several aspects of the custom mining plugin. More details below!

Flux Drops
- Increase chance of dropping blazed flux from 3% to 15% since nether regions in the custom mining world are rare and there's not as many blocks there
- Add ancient debris and nether gold ore to blazed flux drop list
- Increased blazed flux price to be the same as normal flux price (from 350 -> 500)

Gem Drops
- Increase worn value multiplier from 1.1 to 1.3
- Increase pristone value multiplier from 1.4 to 1.75
- Drop ruined multiplier from .7 to .3
- Drop badly damaged multiplier from .8 to .6
Reasoning being to better balance the gambling of gems. Currently you dont get much reward for risking less money and its more likely to go under than go above (3 multipliers that go under 1 and 2 multipliers that go above)

Artifacts
- Change rates of lower tier artifacts, mostly basic. Basic is 50% and you feel like you almost never get the tiers barely above it, there's not much difference between said tiers so it's pretty awkward
  - Basic: 30
  - Unusual: 25
  - Epic: 20
  - Exceptional: 13
  - Legendary: 7
  - (Rest stay the same)
- Drop the time required to identify artifacts somewhat. I get that the times are to encourage players to hop back on and check on their artifacts but I feel with timers as high as 6 hours that just either encourages not to use higher artifacts (not much more benefit) or to stay offline until it's done as there's nothing to do until they can identify more things.
  - Basic: 5 minutes
  - Unusual: 15 minutes
  - Epic: 30 minutes
  - Exceptional: 45 minutes
  - Legendary: 60 minutes
  - Fabled: 80 minutes
  - Mythical: 120 minutes
  - Celestial: 160 minutes
  - Divine: 200 minutes

Zeta Drops
- Emerald ore should give a lot more zeta as they only spawn in one ore veins and mining them means sacrificing an oracle spawn. From 1500 -> 3000
- Diamond ore should drop as a result from increasing emerald ore, as diamond ores are required to mine anyway to spawn oracles. From 900 -> 450
- Due to nether biomes being rare and you can only get quartz there, quartz value should be increased from 90 to 155 (Same as redstone)

Xp Rates
- Same logic as before emerald ores should give more experience but not as much of an increase in this case as this would encourage farming emerald ores and then just later grabbing them for oracles once you have the desired level. from 200 -> 300.
- Still using the same logic, diamond should drop from 150 -> 100 for balancing purposes
- Quartz exp should increase from 15 to 35 (Same as redstone)

Oracles
- Increase phase 1 lvl requirement from 30 to 35
- Decrease phase 2 lvl requirement from 60 to 50
- Decrease phase 3 lvl requirement from 90 to 75
- Decrease teleport chance for radalite from 80 to 30
  - As a result of less teleport chance increase damage from 28 to 35
  - Increase health from 1500 -> 2000
- Increase teleport chance for impulse to 90
  - Decrease damage from 34 to 20
  - Increase movement speed to x2 from 1.5
  - Decrease knockback resistance from .9 to .6
  - Decrease health to 1500 from 1800
  - The goal is to make a speedy boss to better fit its name/attributes however that means other values      need to be nerfed to realized this goal.
- Tohka seems fine, would need to first experience the battle before giving an opinion here.

Guardians
- Decrease teleport chance from 100 to 25, guardians are mini-bosses needed in order to get buffs to get to late game where you can fight oracles and such. This would decrease the amount of people trying to cheese the fight and just fight it legit as they don't get teleported to on every hit which guardians do a decent amount of damage.

Disclaimer: I do not believe this should be an immediate change, we are still in the midst of merging mercury with survival and as a result there are things that have yet to be implemented such as a custom enchant system. We are also still working on the custom mining system to be sure people can't cheese or exploit which imo these changes should wait until that point however I wanted to go ahead and get this suggestion out of the way.

Reason: Balance out custom mining more, make it feel more rewarding, make some aspects more difficult etc.

Pros
- Since I've given exact values the changes are really easy to implement (values are also up for discussion, skizzles has a better understanding of balance and I generally discuss with him and sometimes we end up with different numbers whether they be higher or lower)
- The plugin feels more rewarding while also being more challenging with the changes implemented
- If values don't work out suggestions can always be made to change them as needed

Cons
- Some aspects might be too powerful, like the impulse may be too fast or radalite might do too much damage.
- Stuff like artifact times being decreased may lead to faster completion of the plugin? (If that appears to be the case we can change values again) However I feel it's very slow to get your first vessel which so far is one of the best parts of the plugin imo.
- A lot of values to change at once, it's hard to tell which aspect has had the most impact with so many changes being made at once (We can always implement it gradually if need be)

Suggestion: Make cave-ins and hypoxia less often
Reason: I know cave-ins and hypoxia are not supposed to be "good" things are supposed to make mining more of a challenge however I feel like they happen too often, especially cave-ins with a pickaxe with 3x3x3 mining. If they happen too often it becomes less of a challenge and more of a deterrent.

Cave-ins are also a bit buggy for those with ... less than optimal internet such as me. Not really buggy as in "glitchy" but more so it can create annoying ghost blocks (easy fix with f3+a). Makes it difficult to properly mine sometimes.

Pros:
- Encourages mining more
- Makes the mining experience feel better and less annoying

Cons:
- Makes mining a bit easier, which may be a bit unbalanced with how fast people seem to be progressing
- No idea how much less common they should be, creates work for whoever implements the suggestion to figure out how to do so (assuming it's possible)

So on mercury we had originally planned on trying to set up a custom horse plugin for a more RPG-like experience however skizzles was pretty busy and had troubles finding a decent plugin for it at the time. Given that mercury is now merging into survival I don't see why we couldn't look into trying to do the same for survival now once the merge is all said and done. 

I would like to point out however that MCMMO horses has not been updated in 2 years (at least according to that page you linked) so if we do setup a plugin I doubt it will be that one. And to be honest when I last used MCMMO horses personally I was not a fan of it. In it's defense however I had no idea what configs were and did not set anything up, I just plopped it on the server and expected it to be amazing.

Overall I agree with the suggestion of implementing a custom horse system on survival, just thought I'd bring up MCMMO Horses may not be what we use/I do not agree with or am I a fan of that particular plugin however :x