Uggggggggggggggggggh! Well, maybe fixable if they patch heavily...
Game physics: run speed is too fast, walk speed is too slow, the leaning doesnt lean.
All of the above ought to be fixable easily enough in either a patch or a mod, I don't mind or care which but a mod seems more likely.
Now onto the more serious problems:
"Ranked server" is utter rubbish, the settings are for console kiddies that love their respawns (you can't have a tactical shooter with respawns, period - as soon as you can respawn you stop giving a damn about staying alive), and "oh my god we can't let two teams fight if theres one player more on one side!" - In a test I spent at least 20 minutes waiting for a fourth player to join so we could actually spend a few minutes playing the damn game. Okay, that's easily fixed by playing unranked.
Even unranked you can't get around the stupidiest map rotation system ever - gone is the old Raven Shield style "you play a match on this map for X rounds", and in is a system that reloads a new map every single round...
The so-called dedicated server is rubbish, remote admin consists of a kick command and thats about it, and it crashed three times in one day on our server.
Maybe (if hell freezes over) UBI will listen to the players and fix these problems in a patch. More likely they'll see all the complaints and drop writing PC games altogether and go write nice simple console games for the braindead instead, you don't get as many complaints from people when their gaming machine doesn't offer the facility to access online message boards with an ALT-TAB keystroke.
Go buy The Regiment instead... it might not have a real multiplayer solution but at least it's cheaper and can be fun to mess around in multiplayer. Or just wait for Ghost Recon 3 and keep your fingers crossed that one isn't messed up too. Personally for now I'll just stick with BF2 for action and Raven Shield for tactics.