I was thinking how there are so many sets which do lethal damage as an example, but for exotic types we get one, see Ice, Fire, etc. It would be nice to have additional sets on the same type but with different vibes. The easiest for an energy melee set would be Sonic Melee since it is practically there with the Blaster secondary and it would offer a quick attack energy/smashing damage set.
In terms of armors, we need one with a damage aura of Psy damage.