OT is not as dire a need as people think it is at least not in the first round. Ozzie has had recent success finding good additions to the O line in later rounds:
John Urschel - 5th round 2014
Rick Wagner - 5th round 2013
Ryan Jensen - 6th round 2013
Osemele wasn't even a 1st round pick and is shaping up to be one of the best in the league, the only recent blemish of Ozzie's I can find in regard to O line players is Gino Gradkowski in the 4th round of 2012, since then every single O line player we've drafted has been solid or better. You could even argue Monroe's last two seasons have been anomalies considering before those years he had only missed one game a season.
That being said, Ozzie hasn't had the most stellar record with skill position players in late OR early rounds recently, SPECIFICALLY the secondary:
Terrence Brooks (S) - 3rd round 2014
Marc Anthony (S) - 7th round 2013
Matt Elam (S) - 1st round 2013
Christian Thompson (S) - 4th round 2012
Asa Jackson (CB) - 5th round 2012
An OT as early as #6 would be a waste. If we're taking an OT I'd rather trade back to the early 10s and get more value out of it, but I find it hard to argue against going with Hargreaves or Ramsey at #6.
Make a good pick, not just a safe pick