It's nearly impossible for me to give any Illinois campus bar more than 3 stars but Legends comes close.
Yeah, sometimes the service can be downright lousy but compared to anywhere else, it's par for the course. Legends' best attributes are the many TV's available to take in the game and the space for people to spread out. If you're nice and it's not too busy the staff might even put on the game you request. It's not too tough for a few people to lock down a good chunk of space here which is what makes it a winner. The patio is a decent size and appealing when it's nice out.
The prices are about campus average and the tap selection sucks. The main draw is coming here on Wednesday and doing the venerable "School of Beer" (which should be renamed "Buy our entire bottle list") which features more enjoyable selections than what is on draft and awesome prices ($4 max per beer, usually less).
Definitely my go-to if I feel like drinking on campus without being heavily annoyed. Also, if you look like someone who used to work here, current employees will ask to take their picture with you or stare at you from across the bar.