Those that passed on DeCastro missed on an elite guard. Take into account very few guards are taken in the 1st round of any NFL draft. One article supporting what I state and a list of the last several drafts when OGs were taken:
2012 - 2 OGs - DeCastro (24); Zeitler (27)
2011 - 2 OGs - Pouncey (15); Watkins (23)
2010 - 2 OGs - Iupati (17); Pouncey (18)
2009 - 0 OGs - But two centers were selected Mack by the Browns and Wood by the Bills
2008 - 1 OG - Albert (15)
http://www.sfgate.com/sports/article/NFL-DRAFT-PREVIEW-OFFENSIVE-GUARDS-2575778.php
The order of presence when it comes to offesive linemen are normally LTs, RTs, and then interior linemen. We will see how this plays out during the season.
You are making an assumption that Richardson wasn't going to be there. The Brown's FO blinked and got bought to move up one f@#$ing spot. It's a moot point but IMO Trent would have been there at 4. NO doubt in mind . Think what you will amigo.
And no I did not forget about the RT from Cal they selected who was project to be available from the 3rd to 4th round depending on which mock you looked at. Is he better than Martin? We will see.
Keep drinking the Kool-Aid tsteele. You will not convince me otherwise. Again I hope I'm wrong but I do not see it right now and if I am I will be the first to admit it. Peace.