Next year april fools suggestion because i want something for that day which is must be funny 
Here is the idea:
- On the April fools day, very single player join the hub will be has different random size, or they can customize themself by using command “/size”
Hows the command work?
/size y x [insert number from 5 - 64 pixels of a normal block)
Example: /size y 25 x 16
Here is random picture for example (sorry this is bad)
- Every time player jumps will give the player random animation from a random mob in minecraft (which mob must have an animation, walk wont count).
Edit: This will both in hub and in game, but it wont affect the hitboxes. Its just april fools, why not try to make everything messed up?
Just random idea again, thanks for reading