PBSC can be pretty difficult to deal with. If you work with them, be sure to read the contract carefully and negotiate to purchase non-proprietory parts from outside vendors. Also , work in something about parts quality, timely shipping, etc. The bikes are generally made by Devinci. The bikes are built like tanks and mostly easy to work on. Not great to ride for long periods, but that's the point. Easy for anyone to ride. Their software tends to be buggy and customer support is meh. PBSC is also Shift, which manages a couple of bike share systems. A lot of the larger shares are run like factories. You may want to look into that.
B-Cycle is making a good mark in smaller US cities.
You can also read how Baltimore has had large theft problems.
There's a French company making decent bike share bicycles. I'll see if I can find there contact info.
Portland is experimenting with a different locking system that doesn't require so much software and hardware like NYC and Chicago.
Rebalancing and logistics is another part to consider. Making sure the bikes are available evenly around campus is important and takes a little planning on how to execute.
Having bike share in Chicago has put more cyclists on the road, made cyclists out of people who might not have regularly ridden, increase commerce, and has been a boon to Chicago, where I live.
I worked at Chicago's Bike Share for 3 years, starting at the beginning. Feel free to email me directly with any questions and I'll do my best to answer.
Cheers
Rob