Hello! Your suggestions are very much appreciated however a good bunch of these ideas have already been suggested by other users, I will try to link them all below; another thing to note is that when making suggestions, it’s best to avoid lists and rather create a separate topic for each suggestion, this helps with how the voting system works 
UHC:
Crafting & Redstone in Skywars:
SG Update:
Ranked Games:
Have a lovely day 