2D animation isn't always cheaper (if anything I think it's supposed to be more expensive) but there were a bunch of montages that were essentially just animated slideshows. Very stylish and well done animated slideshows, but slideshows nonetheless. I'm pretty sure most of the time making a static image in 2D is a lot cheaper than making a static image in 3D.
Again, not saying it detracts from the show, but I do think it's a noticeable difference from the first season.
Also I do think they never mentioned shield guys name out loud, maybe in subtitles. I laughed out loud when they revealed he was an enforcer as well. I just assumed he's a name character in LoL or something.