the negative of a short track record for cruz is correct, though minor
the greater problem is how will he adjust to our system, and at this point that is a valid question for any WR in this league, no matter their prior careers
So the pats will need to make a general decision which will become a centerpiece of the team for as long as brady is here at least: do you spend big on proven WR's in the nfl, and hope they can learn your system, or do you go by draft, waste early years teaching wr's, and again hope they can learn your system (at this point i cant say their chances are any better or worse than an FA WR)