[jandrese]

Getting Redstone interactions to be bug compatible is no small task. Redstone has complex interactions with nearby blocks that are completely baffling to new players and still challenging to veterans.

Mob spawning and behavior shouldn't be that difficult, but if you want identical terrain generation you are going to be cursing life.

What would really make a third party server stand out is first class mod support.

Better performance is almost a given. Minecraft's engine has a lot of low hanging fruit that has yet to be picked despite it being theoretically a multi-billion dollar game. Just look at how shockingly CPU hungry hoppers are for example. Mob pathfinding also consumes an inordinate amount of resources and is still kinda lousy.

[tonetegeatinst]

Agree with how recourse hungry Minecraft is.

I get it has lots of computing to do for something like a server with large players, but even a server with a small amount of players that's technical focused can easily bring the game to a crawl.

Its funny how the best way to get great performance from Minecraft is getting a CPU with great single core performance, get lots of memory, and then use fabric mods to optimize the game/server.