I find with MX games, it's best to just play and enjoy them for what they are and not get too bogged down in the minutia of the physics. At least Milestone acknowledges that gravity is, in fact, a thing. Agree with RZ05 that they seem to get every other MX game right so this one should be good? As for the whip/scrub button, it's just Milestone trying to insert "game" elements into something that should just flow naturally, just like their stupid "tuck" button. I ignore and don't use one and set the other to auto. I still prefer it to that other studio that seems to cater to the players that want to throw sick triple flip can-no-can/reverse double whatever the hell they call it and hit orbit off every jump, anyway.
We await anxiously but there will be a few reviews read before purchase and no pre-order.