SI's Chris Mannix in his NBA Draft Big Board has Len listed at #12 overall, which to me seems about right at this point in time (mid-first rounder). With the recent Dez decision (stupid NCAA), we'll need Len to play at that level throughout the upcoming season.

Link: http://sportsillustrated.cnn.com/2012/writers/chris_mannix/10/26/2013-nba-draft-big-board-nerlens-noel/index.html?eref=sihp&sct=hp_t11_a0

Len's numbers don't jump off the page, but team execs are high on his defense (2.1 blocks in 21.2 minutes) and are eager to see him play a more expanded role. "I really have no idea what he can do offensively," an executive said. "But he plays lottery-level defense and I think his offensive game could really develop this season."

Edit: Added a poll for fun.