So what a problem to use no-playable skills that uses only npc and bosses? So if Poison Ivy is a boss from villain side and both team can use already her pheromone bloom (supercharge) skill, so what a problem to add these skills from all bosses to iconic skills section? Thanks for patience.
The iconic powers have been in game since at least the beginning of 2012, possibly since launch (not sure because I didn't play at launch) so they weren't ever about being "boss" abilities you could use, just powers used by iconic DC characters.