As someone who's not really familiar with motorcycles/bikes (I've only ever driven some 50 cc ones), I quite like it, despite only being able to drive using the various training wheels 
When you get it right, it feels really great, and it obviously looks (and runs) quite good. A bit too much aliasing for my tastes, which becomes more of a problem the faster you go as you need to be looking far ahead to see what's coming, yet the details of where you look are quite pixelated, which can lead to mistakes. But nothing too bad, I'd say, plus it will hopefully be possible to solve it (the game only offers FXAA and TAA, but hopefully some better AA options will be possible through the GPU drivers). Shame about not being able to change the FOV (unless I've missed it somewhere), but the default in the 1st person view suits me fairly well. They've toned down the dirt on the windscreens, which now makes the 1st person view a perfectly valid option, I like it - it still does get dirty, but you can see through it fairly well, nothing like the solid wall of grey smudge in their previous videos. Would also like an option to disable the camera movement - it's nice for immersion I guess, but it makes controlling the bike harder.
The biggest issue I have with the game is the controls, and that's more of a bike game issue than it is the game's fault. I've basically settled on using my flight stick with throttle and brakes mapped to buttons, it certainly feels like the best option for me. But I will try some more alternatives. I tried keyboard (I much prefer keyboard over gamepad in pretty much any situation, unlike most others) and I also wanted to try using a wheel, but the game doesn't even detect it, not even as a generic controller (T300). The biggest problem I have with the controls, though, is the lack of feedback - most of my crashes happen when I upset the bike somehow or go over the limit of traction, but notice it too late to be able to do something about it due to only having the visual cues to detect it. It would certainly be great to actually feel what the bike is doing, just like we can feel it through the wheel in the car sims. But again, I guess that's a general issue due to the lack of actual control option for a motorcycle/bike.
Here's a somewhat acceptable lap with one of the less powerful bikes in the game. Still plenty of crashes and tons of close calls, but not as embarrassing as my first attempt I had in my first look stream
When you get it right, it feels really great, and it obviously looks (and runs) quite good. A bit too much aliasing for my tastes, which becomes more of a problem the faster you go as you need to be looking far ahead to see what's coming, yet the details of where you look are quite pixelated, which can lead to mistakes. But nothing too bad, I'd say, plus it will hopefully be possible to solve it (the game only offers FXAA and TAA, but hopefully some better AA options will be possible through the GPU drivers). Shame about not being able to change the FOV (unless I've missed it somewhere), but the default in the 1st person view suits me fairly well. They've toned down the dirt on the windscreens, which now makes the 1st person view a perfectly valid option, I like it - it still does get dirty, but you can see through it fairly well, nothing like the solid wall of grey smudge in their previous videos. Would also like an option to disable the camera movement - it's nice for immersion I guess, but it makes controlling the bike harder.The biggest issue I have with the game is the controls, and that's more of a bike game issue than it is the game's fault. I've basically settled on using my flight stick with throttle and brakes mapped to buttons, it certainly feels like the best option for me. But I will try some more alternatives. I tried keyboard (I much prefer keyboard over gamepad in pretty much any situation, unlike most others) and I also wanted to try using a wheel, but the game doesn't even detect it, not even as a generic controller (T300). The biggest problem I have with the controls, though, is the lack of feedback - most of my crashes happen when I upset the bike somehow or go over the limit of traction, but notice it too late to be able to do something about it due to only having the visual cues to detect it. It would certainly be great to actually feel what the bike is doing, just like we can feel it through the wheel in the car sims. But again, I guess that's a general issue due to the lack of actual control option for a motorcycle/bike.
Here's a somewhat acceptable lap with one of the less powerful bikes in the game. Still plenty of crashes and tons of close calls, but not as embarrassing as my first attempt I had in my first look stream
