Option in your profile to have less graphics for smoother game play and less lag. For example less explosion (when a mines launcher blows up), or keep some things static like torches, health, armor, and ammo don't spin in place and are static, or less animations with gun shots.
Easier way to get coins and gems.
Nerf some guns (escpecially the storm hammer).
Nerf the armor.
Able to sell guns.
Better grenades. When I mean better grenades, I mean a 5 second time limit before another grenade throw, max 4 second holding time of grenade, stronger throwing of grenade, and a more accurate throw.
Ban dating servers and *** word that is gf, bf , etc.
Sometimes a coin laying around or a gem as well, but won't be 1 coin or 1 gem but will be 10 coins or 10 gems.
Owner of server can kick players.
And lots of other ideas that others have posted earlier.
Sorry for long post.