Ok, suppose we're hoping for better value from a trade-down, in terms of salary impact, and the number of guys we can pick in the first few rounds, than simply picking somebody at #2 and paying him #2-overall money.
Who does St. Louis have to draft at #1 to make our #2 pick more desirable to the the teams drafting after us?
I am assuming that there are only three players St. Louis would consider at #1: Jimmy Clausen, Sam Bradford, and Ndamukong Suh. The Rams won't take Russell Okung (they took Jason Smith, LT, at #2 last year), Gerald McCoy (Suh is better), or Eric Berry (they're not paying a safety #1-overall money).
So, who needs to go at #1 to make an attractive trade-down from #2 most likely to happen?