The one exception to BA's BPA approach to stocking his roster may very well be the PS. I think he's using the PS to fill specific depth needs:
After he added quality OT depth in Sowell and a .big guy to back up Dumpster Dan - that'd be Ta'amu - he turned to his PS to fill specific needs.
He wanted a pass rusher in case Abraham went down, and grabbed Moch.
He was going with only 4 WR's (plus PP21) and wanted a reliable possession guy. Welcome back Kerry T.
We're kind of thin at OC - say "hi" to Blake.
He wanted more than 4 safeties on his full 61 so he brought back C Taylor.
I'm not sure what role Rowe fills - except he's all-around, energetic and adds speed & quickness to our group of LB's.
That leaves 3 PS spots to fill, and I expect us to continue to address needs:
1. Speed at WR (Hawkins?)
2 & 3. An all-purpose TE & a Housler TE clone who can run and catch.