I know even less than you having not seen the scouting videos. Isn't it WAY too early to tell what this draft is going to have at the top? Aren't there always players who emerge during the year? No one has seen the freshmen in a college game yet (just starting to see them).
Since when has that ever stopped us from speculating?

To put things in perspective, I found a mock from 11/13/14 for the 2015 draft. Yeah, it's Bleacher Report, but it's close enough. Here's how they looked:
1) Mudiay
2) Okafor
3) Towns
4) Cliff Alexander
5) Stanley Johnson
6) Porzingis
7) Oubre

Hezonja
9) Portis
10) Caris Lavert
So for the top 10, they did an okay job, missing big on Alexander and Lavert (injury) and missing "medium" on Mudiay, Oubre and Portis. Every one of those represents a situation where they rated the player higher than he ended up.
But there were some big misses at the top. They had Willie Cauley-Stein at 12 (He went 6.). They actually had us picking Justise Winslow at #12. Ouch, that's painful. So MJ, how's Kaminsky doing? Amida Brimah at #13, Kevon Looney at 14. D'Angelo Russell? Not even in the first round.
So they got most of the top of the draft right or within a few spots of where they ended up. Their #1 ended up going 7th, #4 didn't go at all and they didn't even put the eventual #2 in the first round. In other words, out of the five players who even went top-5, they only had two of them listed pre-season as top-5. Same thing for the next five: they only got two of the players that went from 6-10 (I'll give them Porzingis.).
So while it's never too early to start guessing who is going to be at the top, it may be a bit early to do so
accurately.
http://bleacherreport.com/articles/2265955-2015-nba-mock-draft-very-early-look-at-all-30-projected-first-round-picks/page/2Mike