Hmm... that's not a terrible idea... NOT the married-to-Megator part, that's awful, but the giant part is interesting...
I like this - and I like the four characters you chose... I just think that maybe they'd be better as "The Fighting Foe Men."
Toyguru has hinted a few times, when asked about the FFM, that they could be coming... he also mentioned that putting the FFM into the bios was his "clever" way of getting the "fans" to demand new characters.
Though, they did say "no new characters," the CONCEPT characters are obviously ok.
I would not be surprised if a bunch of the concept characters were being developed for a "Fighting Foe Men" multi-pack for the 30th Anniversary.
THOUGH, Penny, you, and the rest of us that want her, are going to have to clamor LOUDLY for her to be included. TG planned out that Legion of Superheroes 12-pack for DCUC and even though there are MANY awesome LOSH females, only ONE made it into the 12-pack.
And, I'll say it again, she HAS to come with some sort of witch-hat.