I definitely see the appeal of the character designs and such, and the gameplay is alright, but it does get very repetitive and grindy eventually. Ultimately, these games where you need to wait for your "energy" to recharge in order to play make me rather anxious so I think I'll just avoid them from now on.
Also, as someone who's new to the series, I was surprised by how grim the setting is, even the "good guys" have concentration camps and are basically a ruling class.