Hmm, I'm not familiar with Animal Crossing too much, so I can't speak much for that one. Fire Emblem's always good, however, as far as I'd know. I usually play STGs these days, so I may not be that familiar with the other games out there very much, otherwise meaning I more-or-less live under a rock outside of STGs, with a few exceptions here-and-there, but anyhow...
Also, since you mention being a Touhouer, I'll just throw this out there. I imagine you would want to play something similar to the Touhou STG to where it would sharpen your shmup skills, so for the 3DS (Since you said you own one), you could consider Ketsui Death Label at some point in the future. That one's region-free, although a bit on the pricey side, but that one could be very good, if you like playing the Touhou STG games. I have no idea what's out on the Wii U, so I can't really say anything for that one.
Others I'd know about for the DS/3DS, as far as I'd know, concerning STGs, are, well, I've heard of the Nanostray series, but yeah. There's more out there for the DS/3DS for the STG genre, that I'm certain of.
