I noticed the coasting as well and I used to like him, but I doubt I get him this year. I had him in one league, drafted him real late as a rookie and he was a great keeper for such a late round until 2012, where he killed me.
I see top 5 mentioned above and sorry, that isn't his ceiling anymore. In 2010, he finished 8th according to FBGs and missed 3 games. He's missed 1, 2, 3 and 3 games in his 4 year career, so pro-rating to 16 is meaningless. That said, even in his best year, his total points wouldn't have been top 10 in 2012. In 2012, there was no Demaryius, no Julio, no AJ Green, Cruz, Decker and Bryant were rookies, Welker was coming off of ACL surgery and had his worst year in NE, Marshall was in his first year in Miami and had his worst year since his rookie year, Vincent Jackson missed 11 games and heck, even Calvin finished 6th.
So, that said, anyone saying Nicks' ceiling is top 5 is ludicrous. Barring injuries, no way Nicks finishes above Calvin, Demaryius, Julio, Marshall, Green, Bryant, and most likely 2 or 3 of the 4 others, not to mention AJohnson, Roddy, etc. If he regains his 2010 form, he could be a solid WR2 and maybe even get into the back end of the top 10, but it would take 16 games (not likely) and a lot of injuries for him to even sniff the top 5.