I would love to see a sequel to snap, both the Wii U or the 3DS would be perfect for this (I'm rooting for 3DS 'cause I already own one of those, but I'd understand)
Conquest I think should get a sequel but they have a LOT of mechanics to work out there.
For starters, let Pokemon learn two moves, especially if they're dual typed. For two, let us choose if we want to attack and then move rather than forcing us to waste our move turn if we want to attack something close by
3...fix that RNG. If you tell me I have a 96% chance to hit, I shouldn't miss three times in a row. By the end of that game I was just saving before every single attack and resetting if I missed.
I could go on, but I'll stop. I would love to see more of conquest. Add more Pokemon too.
Don't forget to check out my MegaTen themed webcomics at http://www.drunkduck.com/user/Strain42/ (Currently Updating: Persona 4TW Add-On M-F)