That last one interests me very much because I'm struggling to thing of what could make the jump other than characters. The setting of the comics is already steeped in the games, with the incorporation of stuff like Wispons, Power Cores and so on. Tangle and Whisper have of course already shown up in Sonic Speed Battle, but it would suck if they were consigned for their only game appearance to be in a crappy, money grubbing mobile spin off. Overall though, I can understand there not being too huge an appetite for intricately interweaving the two media settings. Not that I think this means they aren't the same canon, but if they're going to make references or use characters, they'll probably end up being quite hands-off. Tangle may show up in a game but she's just somebody Sonic happens to already know without getting too bogged down in the details of the Restoration or the Metal Virus. Honestly, that's not too much different than how the supporting cast is already treated. As Ian recently said, even something like Forces or Frontiers could be someone's first Sonic game yet, since Rivals 2, there's be no real instances of reintroducing a character and contextualising them in each game they show up in. From Generations to Forces, they all just exist as established friends, and I don't think there's any need to treat the IDW characters any differently.