There's a lot of side stuff to do as some of the exotics are now multi-part quests. I'm working on one for the gun smith that required me to collect 4 randomly dropped guns, i got them all within a week just from leveling up my character and grinding for reputation, and then i had to get 75 kills with a shotgun with one of those analyses things he sells running, and now i have to break down certain shotguns. It's a long quest.