Letting the next Paramount Sonic film take place in the original settings from the source material would do it so much good.We had little bits of it in the first two films, but the third film was entirely contained on Earth.Narratively it's also where the story should progress. Sonic and his friends have found home and family on Earth, but he needs the opportunity to reconnect to wherever he came from and meet more of his kind.The Sonic 2 prequel comics make clear that there's a lot more going on in the wider universe, and that inter-planetary activity isn't unusual. Tails basically invited himself in after monitoring Sonic independently for a while and wanting to actually meet him.