I have and am leveling a bunch of titan exotics for various situations and reasons. Helm of Inmost Light - great for striker in PvP or PvE where it's useful (strikes with oodles of low level dregs/thrawl and a defender titan already on the team) Armamentarium (typically striker) - sweet for PvP maps where the extra grenade comes in handy or where I may use up a lot more ammo. Almost useless to me in PvE with all the ammo dropped on the ground though. Glasshouse - a MUST whenever I'm running defender. Just 'CAUSE. :) (obviously this gets replaced in the lineup if Helm of St-14 ever drops for me) Ruin Wings - Just got them the other day. Not sure they'll be THAT useful but the faster revives might be worthwhile in PoE. Crest Of Alpa-China - Just got this one too. Might as well level it and look for a good use. If none is found in a few weeks then I have a free shard to ascend my other exotic gear once HoW drops. Guess I'm just sharing my thoughts on my own gear. In other words, try it all. See what fits. You might be surprised.