I've already mentioned this before, but I'd really love to see a English version of Dungeon & Fighter (Arad Senki for the Japanese name). It's WAY more involved than Pi Story and isn't as "cutesy", which a lot of people dislike. I've played it in Korean and absolutely loved it, but quit because I couldn't really finish quests and communication was difficult.
There's also already a HUGE player base within the foreign servers (Japanese and Korean alike) that have been hoping for an English release already (see various gaming forums, ie. OnRPG).
The video doesn't really do justice to the actual gameplay, but it gives a general idea of the fast paced style. It's also 3 of the same class (You're best off just looking at a few videos to get an idea)
It's an incredibly fast paced, action oriented and skill based game. I'm curious as to whether it's up for license though, as the company is hangame and the NA equivalent for that is ijji, which has yet to show any interest in releasing an English version of it.
I can't really speak for TYPE of game, but this is one game in particular I'd love to see an English version for, and if Aeria were to pick it up, it'd be amazing.