WG-LTS Survey - 2019 - Google Forms edition

I tried to look through the survey from the mindset of a potential respondent. As it's written, it's very daunting in part because the first page is long and there's no way to see that the subsequent pages aren't.

I think there would be a lot of value in having a "quick" version of the survey. What are the 5-7 most important questions? Can we put those on the first page followed by a yes/no "Do you have time for 25 more questions?" that either sends the respondent to page 2 or a last page that just has the "Any other comments?"  and "Email?" questions.