The Texans may have tried last year, but they still fell back into their same habits. Look back at our draft last year.
We were basically forced into taking a WR in the 1st round because we relied on Walter/Jones so long and never tried to upgrade them (same reason we were forced into taking Mercilus). We never built up depth until the very end (Posey & Martin) but it was too late at that point. Posey can't stay healthy and Martin was yet another horrible decision. We also let Jean hang around way too long.
We took Swearinger as a replacement for Manning in the 2nd round, which was a smart move. But we let Glover Quin walk and replaced him with Reed/Keo, which was one of the stupidest moves of the year for any FO.
We needed help at RT so we drafted a guy coming off injury, who promptly got hurt and missed the season. We also wasted our other 3rd rounder on a low-character guy who didn't have any schematic fit in the defense.
We used our 4th rounder on an undersized pass rusher, albeit one with a lot of potential.
We finally addressed the interior O-Line in the 6th round, but by bad luck he missed the season because of injury. Another 'Texans' pick with Bonner in the 6th. Why did we need another developmental WR again? Great picks by taking Jones and Griffin late in the 6th, except we let Jones go during training camp and he ended up starting for 2 different teams last year. Griffin is set to start this year because we cut our starting TE because of cap issues.
So while the Texans certainly tried last year, they still can't get out of their own way. Look at the Ravens draft last year, 4-5 of those guys will be starters this year. Patriots? Looking at 4 of those guys starting.