Can you recommend some of your favorite fan translations for GBA games that never made it to the US?
Hm, well, when I said I'd beaten "most" of my fan translated GB games, I meant 2 out of 3, so it's an embarrassingly short list that consists of just Mother 3 and Kaeru no Tame ni Kane wa Naru (For the Frog the Bell Tolls). The latter is a GB game but the EZ Flash IV plays GB and GBC games as well.
But both of those games have really, really good translations. Mother 3 is super popular so I won't waste my time on it, but if you haven't played For the Frog the Bell Tolls, I highly recommend it. It's a fun game with a super funny script that was written by Sakomoto (of Metroid fame) and the translation it top-notch.
I have some more imports but I played through them without translations (Slime MoriMori is particularly easy to play w/o translation as it uses images for everything you need).
The only other fan translated GB game I have is Dragon Quest Monsters: Caravan Heart, but like I said, I haven't gotten around to it.