Xenosaga series maybe? Haven't played Xenosaga myself but the series looks good and "epic" and they were made by people who worked on Chrono Trigger/Cross and Xenogears. Btw, if you don't mind PS1 games then try Xenogears :)
Oh, and Valkyrie Profile 2 (again, if you don't mind PS1 games then Valkyrie Profile 1 as well). It's an epic game with an epic story and epic characters. It also has a more mature feel than most other JRPG's. The battle system is turn-based but you can move characters around on the battle field.
And I agree with Soriku, Baten Kaitos is totally worth it.








