I think we will see Eric Brown rise to the top from the competition this year. Remember that Brown was a second round draft pick himself (Albeit the Broncos) and started as a rookie in 1998. He has played as a starter ever since, also at free safety, and is also from Texas.
Brown has always been a big hitter and excelled in big games. I surmise that it may be the lack of big games and no real competition at the SS or FS position last year that has subdued Eric Brown.
This is Brown's year to show what he can do and I can think of a few other members of the Texans Defense looking to prove something. I hope it translates to a dominating D on the field and W's in the outcome column.