I really do want to write about superheroes

The thing is, I wrote about superheroes before, and it flopped. Badly. It was going to be a whole series (for the three or four of you who bought it, that's why the whole supervillain thing was never resolved) but after the first book failed so badly, no more were commissioned. That's the thing with series. The first one has really got to succeed.

Perhaps it was because Naked Eyes was an erotic romance, and supers don't do so well in the erotosphere? (new word, like it?) I was thinking of a new book more along the Sophie lines--non-erotic (although there may well be some sexx0ring) one central character, a couple of love interests, sequels, save the world, diet-to-fit-into-supersuit, etc.

Or maybe it's that superheroes do well in comic books, and on the big screen, but not in books.

Or maybe it just sucked.

Thoughts? Reactions?