The day they make SA3 will be the day they officially run out of ideas. It's their last resource.
Cause the adventure games were 2d sonic in 3d
06 was Adventure 3, and the reason the Adventure-style gameplay was dumped. Unleashed was the first game in the current style of the Sonic games. In addition to the overall change in Sonic's gameplay itself, you can see some clear reactions to the backlash against 06, like making the alternate characters just Sonic variations and a simpler story.
They sneakily avoided any mention of Forces in the stream and only commented on the success of Mania. I think they're aware that people aren't fond of it
Actually, Sonic Adventure is good
Exactly. I mean people still ask for Generations 2 after Sonic Forces.