If Sega of Japan / Sonic Team was going to let western influences take over their stuff more, we would've seen more than just Tyson Hesse and Ian Flynn getting big working jobs with them. Mania and the movies have outshined the games hard this past long while, some will even debate that Sega of America has their head on straight with the property more than Sega of Japan. Even with all of that infamous controversy aside, however, Japan won't completely change Sonic to someone else's vision, they're too stubborn to do that and we know from personal experience. I for one welcome trying to add a little more of a general image to Sonic even if the universes and stuff are kept separate. Tangle and Whisper from IDW? Sure, let them exist in the main canon so long as you don't shove them in our faces. Movie elements? So long as Sonic isn't suddenly gaining his movie backstory, I'm fine with Longclaw or some elements coming in. But things are also too established in my perspective to want everything to merge together either, it would totally just lead to messy mandates and horrible decisions all around; we already had the whole Islanders and Mainlanders thing earlier this year that finally shot down the silent "two worlds" Sonic X rule, I'd rather not mix that up with more interdimensional screwery and retcons. It sucks to have to tread the line between optimist and realist, and between wanting new things and not wanting to abandon old things, for Sonic for all these years.