I almost choked when I read "its by the same company that made disgaea, which explains why the combat system is similar. :3."
Allow me to correcte you, Atlus developed Stella Deus, and it PUBLISHED Disgaea in America. Disgaea was developed by Nippon Ichi Software of Japan, and currently has a new publisher with thier American based Nippon Ichi of America branch. In other words, Stella Deus has zero to do with Disgaea or any of the developers.
It's a strategy RPG like Disgaea, but very different, I'd say it's no more similar to it than FFT, it just has basic Strategy RPG elements.
On a personal opinion of it, I played Stella Dues, got it right when it first came out, it was a tough to adjust to at first with the AP system but it was good. The visuals are alright, but if you play it on a bigger TV you notice how terribly low resolution they really are and they just look like a messy pile of pixels. It's not the most colorful game either, so many shades of grey and a bland blue.
It's also apparent that the Atlus was very LAZY with making this game as there are so FEW units, and aside from the occasional boss/mid-boss, there are no monsters, and you're basically fighting the same 10-15 units through the entire game without too many color variations. The units themselves for the most part don't look remotely like of how they're supposed to, I can't even tell if they're supposed to be human or not.
In other words, I can't agree with your props to the visuals, I think they're downright horrid and boring.
The system is good once you get the hang of it, but then that's it. Once you learn the system you also learn the enemy AI was dropped on its head a few too many times as a baby. The enemies are so incredibly stupid that I literally won a battle with my eyes closed once. Just random attacking won it for me, and I wasn't over leveled either. It was around that time that I returned the game and put down a preorder for Makai Kingdom.
Honestly, I would NOT reccomend buying this, give it a rental first, but I'm sure you'll either grow tired/beat it before the rental periods over. I'd suggest saving your pennies for Nippon Ichi's new S.RPG coming out in July, Makai Kingdom.