Hello!
I think it would be fun if you let us be hero (or villain) team masterminds!
Similar to a "Nick Fury" character, the hero team mastermind has assembled great heroes into a team, provides them with training opportunities to hone their skills, and leads them into battles!
A powered individual in her own rights, the hero team mastermind has a sharp mind and the psychic powers to back it up!
Her frontline fighters are 3 blaster types who charge into battle with energy, electricity, and radiation powers
To shore up the team, a hero mastermind can call on two sentinels in power armor, one with energy blasts, the other with dark energy
The last member she can call on is a brawler with kinetic melee.
Upgrades will teach them stronger attacks in their line.
It would take some balancing out, obviously not giving out a fully kitted blaster, but something on par with the robots and with the variety of attack types like the demon summoning line. I think this power set would be robust and a lot of fun, especially if you let us coordinate the costumes somehow, maybe as a power customization, could be traditional spandex heroes, power rangers types, maybe alternate costumes for villains.
Anyhow, that's my suggestion! Thanks for the fun game!