Okay! I'm gonna get all the negative stuff out of the way first so you can focus on the nice stuff I say by reading it last :3
Bad1. Your monstruct images...are terrible. I don't think they suit the style, I don't think they're even usable :/ They DO stick out but only because all the other stuff is so much better.
Bad2. Watched the video on creating a monstruct...well, it was okay but the person is terrible, is it a placeholder image which will/has been replaced?
Mini-Bad; The userbar you have is cool but the monstruct you used in it seems to have unneeded white pixels which make it look....bad. And the sudden jump from one text to the other when all other text transitions are a smooth fade is jarring 0.0
..... :D Now on to the good!
This is an amazing concept! The creation and fusing etc. and having jobs to send them on, the story is fantastic and believable in a this-is-a-game/movie kinda way xD But that's cool.
The rest of the art is also great, from the posts I got the feeling these were ones included with RPG Maker XP. Some of it though, like the Battle Cards...well the Tide Caste one is fine, but the colour-scheme of the flame one makes it much harder to read - I can read it, but it's nowhere near as clear as the Tide one.
I think it's because of how bright the inner colour is, if you used a duller red[the way the Tide one is duller] then it would work fine! :3
Hm, this feels more like it goes in the bad section, but it's not bad per se, more that it could just be better and is easily fixed.
I think the game design in-and-of-itself is definitely good enough to be a DS game, as was said by someone earlier. I really could see this being on the DS but only if all the art design/quality was brought in to line with the overworld/character tiles and sprites.
:D However after all that I am definitely looking forward to this being completed and released! I'll be dropping in now and then[since I have a lot of sites to work through xD] to check out the updates and maybe even find a link soon enough :P
Also, I think it's really cool how you did this all by yourself! I've tried using Game Maker XP but I guess my mind-set just isn't geared towards it 'cos I can't seem to figure it out, despite it supposedly being so easy everyone and their grandma could use it xD
^-^ ~ Good luck! <3