Been jonesing for a similar style of tactical RPG. Tried out some Disgaea demos, but the anime cringe and the sheer amount of shit on the stats screens turned me off.
I liked the focus on class/character building in those games. Been thinking about XCOM and Fire Emblem games, but I figure I'd fish for recs.
If you want to try something a bit shorter I'd suggest Into the Breach.
Phoenix point is decent as well. Battle Brothers also scratches a similar itch.