What was wrong with the campaign in this one? It had the tournaments in it and overall gave players a pretty well-rounded experience of what the game had to offer while not brutalizing them on the way up. Plus, you unlocked stuff after each tier (prior to 100% completion).

I still think the online play needs some cleaning up. The biggest and most noticeable problem comes from bombs being triggered by the host (or some random factor) and the whole leaving dropped players at the starting line. I don't know how many times I've watched them take a weapon hit simply because the game still keeps them there. Not to mention, every now and then it won't give them ghost-status so they actually become a hazard.