Suggestion: Make end stone mineable quicker with star pickaxes. Currently the mining speed is the same as an eff 5 pickaxe. I think this is a good suggestion because the price of chorus fruits won't go up andrew said and currently the end is dead. I don't think there is 1 farm made and that's because it's not worth it anymore. The hardest part about chorus fruit farming is spending the time making base and that's why the old price of chorus fruits made it worth it. Since the change of price i only see 1 person free farming the chorus that is generated. Maybe if it's a little quicker to make a base people would farm again. You are also taking the risk of losing your star pick .
You can't effectively mess with vanilla mechanics. The best you could do would be like, leaf blower style removing stuff.
Well... I'd say you can (using net.minecraft.server); I just don't know how stable it would be*. * Considering how often I find bugs or break things it may not be a good idea to follow any of my ideas.
NMS is living hell. No thanks. As much as it's a lovely idea, not something that can be done realistically.