If you've already seen the Japanese videos (about exploration, battle, dolls, etc.) then no. Nothing we didn't already know. But the Treehouse showed a lot if you're interested in seeing more gameplay, environments, etc.
It's so messy, and I'm really good at timing drifts but no matter how early I start or how quickly I spam-steer towards the curve I almost always end up outside of the track. They need to fix it
With the bike combination i use, i need to drift incredibly late. Maybe try that.
Edit: dd scratch that. It works better but i still can't drift well enough often.
I still need to finish the first one too. I'm level 75 and I've been at Lorithia for like a week now. I absolutely detest bosses that force me to not use my regular three (Shulk, Reyn, Sharla). I'm pretty sure you have to use Melia to win this battle but she keeps getting OHKO'd