Yea there is only one gambit, maybe more can be added.
The sprites are tiny I think because there are tons of them on the screen often, and it would be weird to have them big. The story is great! Motomu Toriyama was the scenario writer. I like the ethics in the story, it reminds me of Eternal Sonata. The characters move a little slow but it's not too big of an issue for me.
The ends of Chapter 6 and Chapter 7 were pretty insane! I'm really excited by the story, it's really great.