I'm still disappointed by the lack of "Hanikami no Kiss" plus wedding dress cataloge that seemed so obvious that it hurt.
Also no Shinkan Shoujo or Rin and Len like was found in the system files...
I don't care as much about the Macross crossover since I've never seen it.
Oh well, maybe Scamco will include all the 360-era songs as default in the theoretical 3, as well as some imas2 songs.
And maybe we'll achieve world piece and solve world hunger, along with finding cures for both the common cold and cancer.
The real discussion now, though, is what's next? 3? DS 2? I'd ask for a 3DS game, but it doesn't really matter since Nintendo has some kind of love affair with region locking. And also because they seem to really dislike Ryo, Ai, and Eri; I mean, not a single one of them has shown up in CG or ML, even though they're fairly obviously placed.
Granted, they'd probably shoehorn Ai into Cute when she's clearly passion, Eri into Cool which kinda works but she makes a better Cute when we can put Ryo into Cool. (On that note, Yumeko and Cineria have never been heard singing, despite also being idols. This needs to be rectified.) Maybe they'll finally do a Girl's Side game? I mean, there was a hint at the end of 2 in the epilogue, IIRC. Plus, the initial fandumb around Jupiter seems to have dissipated, especially since the Anime. Speaking of which, the anime showed that someone is paying attention to the fandom; maybe we'll see Maou Angel outside of the relations manga?
Personally, my guess is on a new set of handheld games in the vein of SP as opposed to SF. I'm not sure whether for the Vita or the 3DS; both have their advantages, though seeing the idols dance in 3D... Well, the profitability of that speaks for itself.