-I'm not really feeling the jutsu list idea. People coming up with sudden new techniques based on their field of expertise sounds a bit iffy to me.

-Freeform jutsu sounds like more of the same. 

-I'm not even sure what you mean with the powerplay. 

-Last one is completely fine. Once everyone makes at least one Genin, they're free to make as many new characters as they please. Of course, I'm wanting to limit Jounin characters to just Senseis for now, and only as long as they do indeed have students to teach. I don't want an army of ANBU sitting there doing nothing but flex their pecs.