The problem with Tony Hawk 6 is vicarious visions are a pure remake studio afaik so there’s a risk it could be full of shitty levels
I mean, in my non-game-developer-opinion, if they stick to the classic formula, it doesn't seem like it'd be that hard to make Tony Hawk stages. Make fun interactive areas with ramps and rails and stuff you can activate to open new areas up and make gaps and skate lines and place the S-K-A-T-E letters around and hidden tape, etc... goals.
Like I'm sure it's not easy, but I think the biggest issue most TH developed games had was trying to change the formula. Just stick to this formula, don't change shit and a competent developer should be able to make stages.
That being said, if they can bring back some of the original level designers from Neversoft (who may still be at Activision in some other teams after Neversoft was closed, which should make it easier), that would probably make doing that much easier. They don't really need any of the old staff other than the level designers since VV is more than competent at visuals/animation/music/sound and the game does not need a story or writing.