I gotta admit, I would play a mod of Space Invaders that used the characters from Pac-Man. The only thing missing are the defense bunkers. I think it would have been better to use the cherries as the bunkers and have the power pellets be the UFO.
This might just me being an armchair designer and I think in its current form it looks pretty swell. If you like it why not swing by Redbubble and get it on a t-shirt.