>>The corrupt heroes are not villains, they just aren?t good people
That may not work in the super hero genre. The super hero genre, by definition is about extreme character types. Characters are drawn in stark black and white -- there are rarely shades of grey, at least not with the principal characters, certainly not the antagonist.
It takes a great antagonist to make a protagonist. Darth Vader made Luke Skywalker the hero he becomes and made 100's of millions of dollars in ticket sales -- and toys. (Dittoo Princess Leia, and Hans Solo and Yoda, et al.)
You're writing a spec script for a series, right? What is there about the relationship between the good guys and the bad guys that is going to hook people's interest, make them come back every week for the next episode. Nobody I know tuned into "Breaking Bad" episode after episode because Walter White was opposed by tepid, "corrupt but not evil" dudes. We all tuned in because Walter was up against utterly ruthless, and in the case of Gustavo Fring, intelligent and cunning antagonists.
If the antagonists in your story are moral mediocrities, where's the dramatic conflict, the tension? Where's the suspense to hook your audience's interest, make them tune in next week.. and the week...