The shutter is faster on the stock app with ICS. It's not Galaxy Nexus fast, but it's definitely fasterthan it was on Gingerbread. That doesn't always translate into better pictures though because it cuts into the ability of the camera to completely focus. There are a few minor additions here and there (effects, taking pictures while recording video), but I haven't noticed anything that results in any real improvements in the the pictures. Camera ICS+ still outperforms it for me, as does HDR Camera. Also, it doesn't look any different because Motorola is using their own camera app, versus the stock ICS camera app (which looks a lot like Camera ICS+ from the market that you mentioned).