(Of course, this solidifies that BillBelichick will ignore the position at the deadline, and DevinAsiasi will mount a late bid at Offensive Rookie Of The Year when he becomes unstoppable in the final six weeks of the season, but we'll push on...)
You could certainly make the argument about adding at defensive tackle, linebacker and receiver. But at least the Patriots have functional bodies at those positions at the moment.
They have nothing at tight end. We're not talking about having zero depth, which is usually important since we've been told for years by the Patriots that, "The NFL is a business about quality depth management." The Patriots have zero starters at the position at this moment.
This is the total sum of the Patriots' tight end personnel: