Before you look at the stats below. There will never be another S. Smith. Smitty is a one of a kind. There is NO Replacement for him like we know Steve Smith. Somehow we will put a New #1 out there but he won't resemble what Smitty did for the Panthers over his career. The uniqueness of Steve Smith is what makes him a HOFer. Yes one day we will put a new #1 on the field and IMO he is already on the roster.
Steve Smith 2001-2002 1026 yds Brandon LaFell 2010-2011 1081 yds
Steve Smith Rookie season 154 yds David Gettis Rookie Season 508 yds
As these young receivers become veterans. They will mature into players that will handle the #1 Position. Adding a reject from another team is DEFINITELY NOT going to be better than what we are developing on this team.
Your statistical comparison was effectually undermined by your first three sentences.
Moreover, ask New England if Wes Welker is a reject. Some of these so-called "rejects" in the NFL turn into gold in the right hands (just like sometimes gold is mistakenly thrown away if you don't do your due diligence to pan it out).