You know what else the Giants did? They didn't give up two first round picks to get Osi or Justin Tuck, even Strahan was a 2nd round pick.
You can find "heat bringers" without selling your future. They DID however, draft Aaron Ross in the first round to improve their secondary and Steve Smith (who we last saw catching huge passes in the playoffs) to improve their aging receiver core in the 2nd round. Sounds familiar, I know.
Let's see, We've got Ware, Spencer, Ellis, Canty, Ratliff and even on ocassion Spears to bring heat, do we really need to give up two firsts to get another guy at end or tackle who will end up getting maybe 3-5 sacks the entire season in a 3-4 defense? Probably not.
We've already moved quite a few picks to get the guys we have on our front 7, do we really need to keep doing it?
We need to looks for those guys in the later rounds, just like we found Ratliff.