What will the 53 teach us about schemes? Not much, but there could be a few tidbits, e.g.: 1. A fullback would indicate ... use of a fullback. 2. Lots and lots of TEs would indicate ... lots of 2 TE sets. 3. Lots and lots of safeties might indicate a big nickel/safety-as-LB sub package. That's about it. Keeping Tebow would NOT necessarily indicate plans to use a read option. And I can't think of anything that's really up in the air on the DL. Even going light at DT would most likely just indicate a desire to play the waiver wire.