I refuse to boycott JJA. If I had a GBA, I'd probably have it by now. Platform games survive by having something which puts them apart from all the others, and Jazz's main factor prior to JJA was having all the normal sidescroller stuff but doing it well. If getting an original gameplay for Jazz involves adding such things as believable weapons and actual enemy intelligence, so be it.

...now, if Jazz went 3D, that would be a different matter.