I agree. Cho is what we call "budding brilliance." Someone who is absolutely used to being right, that he doesn't really grow in any other direction than to the side, rather than straight up. Which means he grows believing his initial instincts are always on the mark, and when you're a child, you're right. As you get older, it doesn't work out so far.
I want to see him try to finally infiltrate Stark Tower, and go one on one with Stark, power down his armor, only to have it backfire as Stark says something like, "Kid, I was playing with this sort of stuff before I was your age." And incarcerate him, where Cho breaks out of prison, taking a bunch of people with him deep into the Negative Zone, where they build up something akin to a resistance or something like that.