the GBA was mostly a letdown for me
but it gave us WarioWare and Rhythm Heaven, so it's not all bad
Really? I know, different strokes and stuff but seriously for me, GBA had best first party lineup ever. Lots of new IPs (well, for us anyway), huge variety of genres and lots of amazing SNES classics. Advance Wars, Golden Sun, WarioWare, Mario & Luigi (personally this was leagues better than any Paper Mario), 2 F-Zero games...
And Japan got much more than us, those lucky bastards: Mother 3, Starfy 1-2, Magical Vacation, Custom Robo, Tomato Adventure, Rhythm Tengoku...