You're not wrong. Disgaea 5 is just a polished version of 1-4. Never played any of NIS's other games, but from what I've seen they're pretty similar. But I enjoy the series. Enough to waste 300 hours of my life anyway.
Btw, the Spellcaster is named after the former board member Genis_Sage and the other caster was named after inhumanrampager's gf lol. I also have a lot of other board members in there too. None really post here anymore though.