I'm a couple hours into the game and I'm really enjoying it so far. I particularly appreciate the map changes and the way the game is re-ordered. Thank you to the hack makers.
Having said that, I would love it if there was an update or alternative patch with new Pokemon sprites. The back sprites in particular have not aged well. I tried applying the gen 2 graphics patch and it broke the game.
Also, I think Tangrowth should get ice moves now that it's half water, but whatever.