It would make the server more enjoyable.
Here are some more ideas:
Pistol only
1 HP
200 HP
Quick round - The hast is faster
No accuracy - all guns are like a no scope sniper and people only have 1 HP
Speed - players move 2x faster
No gravity - basically no clip but they can go into walls and stuff
Don’t fall - fall damage is increased dramatically
Infinity war - Half of all player at the start of the round are killed
No fall damage
No friction - friction is removed so you can accelerate without a limit
Edit: Some more:
Slo-mo - walk and sprint speed decreased, rate of fire decreased, reload time decreased, gravity decreased, haste increased
Fast forward - like Slo-no but the opposite
Hot potato - have a C4 that if you hold on for to long it explodes
Detectives and Ts - Half of the players are Ts Half Detectives
One man army - 1 super tanky T
Edit 2: How about some more:
Ear rape - The console plays Ali-A intro ear rape throughout the round
TP - The console randomly TPs people around the map
No u - There is 1 T and when the T is killed the person who kills him becomes the T when there are 2 people left it is just a 1 Vs 1
Everyone gimped - Everyone is gimped(Does not come on rapsheet)
Edit 3:
You could have combinations of these to make a lot of possibilities
All ideas are subject to copy right