How do you rate WR's? Is Wes Welker an outstanding WR or just an outstanding #2 WR? What about Fred Biletnikoff? Was he one of the best or was he just the guy playing opposite Cliff Branch? What about Steve Largent, how do you place a value upon him given that he wasn't a deep threat? Why was Keyshawn Johnson the 1st pick in the draft when he wasn't a true #1, lacking burning speed ? Who drafted him?
The point is that if you suspect that JLong might be an All-Pro RT why not take him? I sure as hell would. Just because he isn't guarding the QB's blind side doesn't mean that he isn't performing a critical function if he were to play RT. Look at the Giants and the heat that they bring with Strahan and Umenyora. If the heat is coming then the heat is coming, regardless from what side. And, of course, Long is a smash mouth, kick your *** type of run blocker.
If this guy could be either a very good LT or has a good chance of being an All-Pro RT as you suspect, goddamn right I'm taking him. And if I can pick up Cherilius at #32 to play RT and move Carey inside to dominate at Guard, I might do that. Maybe Nicks, too. And if I can take Chris Williams or Anthony Collins at #32 and move Carey back to RT, great. All the better Collins/Mormino or Hadnot/Satele/Carey/Long. This is the year to fix the freaking OL and have it done with for the next decade. Plenty of picks from #57 on down to fix the D, and free agent money to burn, too.
If we can give Beck some time, Ginn some time, RB and RW some time, good things can happen. In a word, synergy.