Yes, you should DEFINITELY play this hack. I admit that I was a bit skeptical at first too but once I got past the first gym, I couldn't stop! The hack features Fakemon, which are expertly made, I prefer many of the Fakemon to the original Gen III Pokemon. I think it has the original Pokemon too. About the 7 gyms thing; it's not complete but Manipulation is just taking a break from Sienna, he'll continue working soon, don't worry!