I don't like 1.9, because I personally prefer the simplicity of 1.8. You grab a sword, armour, and go fight. There is no delay in hitting, and optifine ofcourse, which made it playable for me :).
Now you have 15 different kind of arrows with negative effects, wings, shields, you barely do damage because there is an attacking delay, and my own team pushes me off the bridge when I am building in team skywars. The 1.9 update made teamkilling go to the next level. Literaly wait for someone to build a bridge and push him off xD. Also there is no optifine yet for 1.9, and I don't want to play with low fps and framedrops.
I would like the server to go back to 1.8, because I just preferred the combat system there. After all it is still a block game, and I want to play the simplicity of it. I love cube minigames, but 1.9 makes it not enjoyable for me at the moment. I could give it another shot when all the "bugs" get fixed, and optifine gets released.
Sincerely,
Steven