I was actually getting more and more disappointed as I read through this, but it's not a bad thing. If I read this topic from bottom to start it would be vice versa.
I think the plot setting was one of the best I've seen (even though the Magnia Orbs and the evil world conqueror reminded me of Magicite and Gestahlian Empire in Final Fantasy VI). The characters were original and inventive, even though I still don't know if Vinavia is a woman or a man. The "rebels" reminded me of FFVI even more. The summons assigned to characters isn't an idea I'm very fond of. It sounds pretty 'have-to-include-this' kind of random idea, or maybe something is actually explained in the game other than "the summons (whatever they were called :p) just decide to pick a master".
What disappointed me was the screenshots. The default and boring looking windowskin in the second screen, and the 99% like Moghunter's default graphics Main Menu didn't impress me. The only screen where you used some kind of effects was the second one, the last two screenshots looked just main basic RTP-boring. Plus, I find the fact there is a dinner table in a prison pretty odd.
Also this "mapping error" bugs me: You're using the outer-corner tiles for inner corners too. It's a minor error, but lowers the points (from me, at least).
On the other hand the artwork is amazing, one of the things you posted that I'm jealous of.
Good luck with this project.
Yeah and while writing I watched a bit of the youtube video you posted, and noticed Vinavia has boobs. One question answered already!