I think that making Harry after Harry would kill the line faster than the apocalypse. I can only see them giving us two Harrys/Rons/Hermiones and then expanding the line from there, going deeper into supporting characters.
It seems kind of unrelated, but when I think of Star Ace giving us Harry after Harry, I think of the LEGO Harry Potter video game - it seems like a weird analogy, but when you look at the characters list a good thirty of them are just variations of the trio, and it takes a lot of fun out of unlocking characters. Star Ace should stay away from rehashes as much as possible. What I like so far is that their two lines are Harry Potter and Steve McQueen, two completely different properties. I really hope they don't do a Hot Toys and just spend all of their time and effort making all fifty thousand Iron Man suits.