Would love a create super hero alliance (guild) element to the game.
I won’t teach you to such eggs about how guild etc work
But the add in I would have would be able to recruit guild member Heroes for battles. Basically it would be like mercenary hiring for one fight at a time. Each hero hired would cost X ISO points and a small percentage say would go to that guild person.
Cost could be worked out as rarity x level x 20
So level 1 star hero costs 10 ISO to hire lvl 2 = 20
3 star level 10 would cost 600 etc.
Of course you wouldn’t be able to have duplicates of main heroes.
Alternatively/and
Hire goons using the same principles such a dr doom bots or hammer agents etc.
Will keep people playing for longer and spending cash on ISO! 8)