I'm just noticing that all my Smash online battles boil down to the opponent just grabbing the ledge to abuse the ledge invicibility, I don't know if that's because I main Little Mac, or just a common behavior, so I'm thinking that removing ledges in exchange for characters having better air mobility can help my game
Con: Way easier for the person ledgeguarding.
Also, in my opinion, ledge-hogging is a pro, and ledge-trumping is a con.