I think that allowing us to equip 2 pieces of exotic armour (not weapons) at once would really introduce some exciting possibilities into the game. I don't think this would affect balance at all because 99.9% of current players have at least 2 pieces already and would be equally matched. It would be an awesome change that would allow far more variety to better match any game play style.
What would be your ideal combo? And can you think of any combos that would be too OP?
For example:
Celestial Nighthawk + Kehpri's Sting = a boss killing Gun Slinger that can still revive team mates caught in tricky situations
-
I would use helm of saint 14 and crest of alpha lupi for my titan, mask of the third man and lucky raspberry for my hunter, and obsidian mind and nothing manacles for my warlock