New subclasses. How about non-elemental supers and melee's and such, with buffs and boosts. For example a hunter activates his super and it boosts defence for allies, a Titan boosts attack and a warlock boosts agility, while they all buff weapon and melee attack power etc. For grenades, each one could be a different element; ie each class could have a solar, void and arc grenade.
English
-
Well, I feel that the classes stat boosts you mentioned shod be the stat correspondent to them. So Titans would boost Armor, Warlocks would boost Recovery, and Hunters would boost Agility. Besides, Defender titans already have Weapons of Light.
-