Biggest downside is that I can't see anything better than a 5*(44) on the transfer market. You'd think it would be only fair that if they pushed you ahead a league level like this, you would be able to bid on 6* players.
Not a big fan of scout players as I'm trying to play this without spending $. I've gone for a few tapjoy deals if they are something I need ... But I have yet to buy coins.