Here are there things I want in SSHG's Kanto:
1) The Safari Zone (why do a load of people think it should be cut?), that or it should appear in Johto.
2) Although I don't think Cinnibar Island should be rebuilt, I think there should now caves where the island was, which you can explore.
3) The Team Rocket plot thread should be expanded into Kanto, Team Rocket should try and capture the Legendary Birds perhapes... with a final showdown in the catcombs below Cinnibar Island.
4) You should have the ability to capture Mewtwo, the Legendary Birds and Dogs and Celebi.
5) And finally, please, oh please, give an explanation for Silver's (or whoever you call your rival) actions, preferrably by expanding his backstory, I've always thought there is a reason behind his actions rather than sheer dislike of weakness (or more accurately, how did he develop that).