The devs will be able to see the results, and tweak their apps so it is compatible for most users. The purpose is so we (Koders) see what other users like.
But all users on this community are also devs that is why they are here. And the dev survey is only about monetization. So if i say no on the first question i am done.
Since all users have two roles that of user AND dev it is difficult to ask those questions i guess. You should maybe have a survey on your school and see what they want.
You are holding a survey for all users around the world. Some UI and UX are culture based. Use of gradients, bright images, etc etc.
We had several somewhat related surveys on the community.