Taiko no Tatsujin, but I can see why since Guitar Hero / Rock Band is the ideal choice of rhythm gaming over here. I'm fine with it in Japanese though, even got the drum for the Wii ones. The Japanese soundtrack is epic as it is. I did play the English one we had, and it was decent. Not as exciting though.
Valkyria Chronicles 3. I'm playing it right now, but man I wish it was in English. I loved 1 and 2, surprised we didn't get 3.
Phantasy Star Portable 2 Infinity. I can understand though, PSP being dead and all.
Older Tales games, but I believe an interview discussed on reviving them for localization.
All of these I still play anyway, but would really prefer in English.