If they can only, for whatever reason, really just make 4 or 5 sets of gear for each piece of content and there needs to be sharing, I'd at least like the sharing to be less blatant. On the most basic level, I'd just like Healer and Caster gear to stop being the exact same piece almost every single time. Have Healing share with Aiming, and Casting share with Scouting or something. Or really mix it up and have one of the magic classes share with one of the more heavily armoured sets. If nothing else it would at least be less boring.. and I say that as someone who actually likes most of the recent gear sets.