Earl Mitchell is going to be just the first line of defense, if there is any gashing to be done, meet Mr. Ryans or Cushing, if that doesn't do the job imagine facing a 6'7 278 lb Mario Williams.
Speaking of mock drafts going forward sometimes it's useful to look back. John Harris just did an excellent review of the entire 2007 draft
http://thesidelineview.com/ really good stuff, case not closed but three years is a more fair timetable than just post draft reviews which I know are stupid to assign draft grades too but seem conditioned to do so. Anyway both the 2007-08 drafts netted Matt Schaub, anytime you can score a franchise QB, that draft is saved. post haste, 2009, add three starters, Cushing, Barwin & Quin with every other pick on the 53 man roster, Caldwell, Hill, Casey, McCain & Nolan. pretty solid maybe a C+ or B-.
2010 draft class took an atrocious hit, what with Kareem Jackson being exposed in poorly executed coverage scheme, Ben Tate lost for the year in a meaningless pre-season game, Earl Mitchell & Darryl Sharpton struggling with injury's & positional designations. But once again Rick Smith drafted with depth in mind, all players still with the team despite injurys or better players ahead in positions. Garrett Graham, behind Owen, Joel & Casey. McManis behind Quin, now Harris & Roc. Shelly behind Wade. Trindon with hand mended should explode & be a missing cog on special teams. Dorin takes the sophomore jump as Andre Johnsons understudy. all in all another solid C+ or B-.
Long story short, Texans are adding three starters a year via the draft while adding depth. They just need something more to show for it. I don't want to have to deal next year with a semi high draft slot position & focus more on taking BPA.