Still going on the idea of doing an Alien Breed clone, I'm going to try AS3 and FlashPunk again.
I'll be calling it "Flash Breed", but the basic concept remains the same.
It will also have some character customization, and because I'm doing it in AS3 (IE: Flash) I will have integration with Kongregate. (Meaning saved games, high scores, achievements, and possibly other things)
I'll post a bit more about it a while later.