Pros:1) The scores are closer.
2) Fewer sacks.
Cons:1) Blitzing doesn't work.
2) Zone coverage is still worthless.
3) Short Passing is wonky. (Too many swing passes to the RB's & too many wide open drops)
4) Receivers still make spectacular catches in double & triple coverage.
In my opinion the bad terribly outweighs the good.