I keep playing because the core gameplay is really good, weapon's recoil is super fun, mobility, etc. But my god there is so much shit in the way of having a consistent experience in this MP.
I think that even U3 with all the kickbacks and stuff had less bullshit. There seem to be no effort to emulate the SP experience in a MP enviroment but instead a transformative effort triying to make the MP something that UC is not. It's weird.
Buddy system was awesome, emulated the UC spirit very good and gave you an incentive to work in couples and it's out.
Mines, wtf are this doing here? they are not even in the SP.
Sidekicks......
No neck snaps or steelfists, i kinda got over these ones because the blind fire is super improved and rope swings wich are a kind of stealth attack i guess.
No more power weapons either....nor picking up enemy weapons...
The game basically promotes playing very close with your team and abuse mines or sidekicks, no more teams of two agains the world and stuff and if you haven't unlocked the best modes or heavy weapons or what not, tuff luck, keep playing.
I'm super salty about some of the clutter here, i love the core gameplay and see very little improvement made by the team in charge of translating the SP to MP.
There is nothing even as cool as the sand storm in UC3 MP.
Customization and unlock is system is kinda cool i guess...