I just got back from Laguna and the improvements are in progress as we speak. Right where the bikes cross the top of the hill going towards turn 1 the hill has been cut back all the way back to the Hospitality building and it looks like there is almost 60ft of additional runoff at the T1 apex. That's good news because at the speeds even a SBK runs you get a slight push there. I'm guesing MotoGP bikes will probably carry at least 10 to 20 MPH more.
I didn't see the top section (corkscrew) but that will be addressed when the track is closed in May for the major renovation prior to MotoGp coming to town.
Also, they already have MotoGp sweatshirts available at the track for only $22.00. I'm sure you can get them online at the track website.
Damn cool looking too!!!
I also measured the distance from my front door to the track entrance. 4.2 miles.