Whoa, thanks for a lot of input!
Let’s start with the languages thing; the description says “…being able to understand other languages without learning them”, implying that you can understand what people are saying even if you don’t know the language at all, it’s a bit like telepathy, which is why it’s Interpersonal. You might thinking of Sami, who speaks 300 languages. His powers are indeed Enhanced, because his actual augmentation gives him incredible memory, which he then used to learn different languages. That’s the difference.
As for the offense things, in all of those cases the bad guys are supposed to defeat you. With Mane, an offensive approach doesn’t work, since he expects it, regardless of how proficient Rio is in combat.
With Resonance, his abilities are just too much for Rio to deal with, which is why it doesn’t matter how skillful Rio is.
I like the idea about study groups, but the problem is that the characters have varying class schedules, some aren’t even in the Hero Program. Plus, I wanted to show the characters in their “natural habitats” more, so to speak.
Rio can’t volunteer, since they already passed the test at that point, plus that would likely lead to Oliver losing, which means he wouldn’t be able to join the program.