I'll take Cooper's agility and versatility over Warmack's power right now. I also think Cooper will get bigger and stronger but Warmack is never going to become more athletic than he is right now. Warmack doesn't possess average agility/speed or below average agility/speed but pretty markedly below average agility/speed for an OG. This concerns me when the game is changing to attacking people more in space which means having OL that can move in space.
I also think Cooper is more tested because he played from a pro offense that is balanced versus Warmack came from a run-predominant offense. Warmack also benefitted by being flanked by NFL quality OL whereas Cooper did not to the same degree.
For this team I much prefer Cooper. I also don't think there is anyway he falls to us in this draft which is very weak at the premium positions (QB, WR, CB, pass rushers, LTs). Someone will take the future Pro Bowler at the non-premium position before he slides to us. I also think there is a good chance Warmack goes before us for the same reason. I think if those two are gone we are better off trying to find an OL in the 2nd or 3rd round. If those two and Richardson are both gone we are probably best off in a trade down scenario as the BPA is probably Tavon Austin who is a luxury we can't afford with our weak OL and aged DL. If we trade down a bit we should get good value for a DT in the late first or early second round.