OK it's April fool day, but just on the off-chance this isn't a joke... difficult to know where to start. Here goes:
1/ Dinosaurs in Grepo is a genre clash, so not acceptable on artistic grounds.
2/ I know most of the heroes were made up (totally unnecessary in my view), but Deinos IS NOT A REAL GREEK GOD. Want a new god? How about Apollo, Ares, Pan (could be a great one), Adonis (OK, problematic for the impressionable), Aphrodite etc.
The only bit I like is the anti-myth spell which could really help push the game back toward conventionals. But INNO would make less money if myths go down in popularity...