Yeah, I dig the modular upgrade/transformation system in MagMax. Terra Cresta has something similar, but I think they're the only shooters on the NES that tried the gimmick, and both are fairly primitive, early titles. I guess Thundercade, too, with the sidecars is similar. Would've been cool to see a powerful, polished late shooter like Crisis Force or Gun Nac do something with that gimmick.
Also, Mega Man 5 is done.