I think that you don't buy a 1000$ scrub just before important games or before the beginning of the play-offs.If you have the money,you'll surely go to search someone who will have a skill level realted to your league level.And this fact excludes the great part of the players on the market.I don't think that a game shape filter would be totally useless,but I think that it will not change a lot from the actual
If BBs can ad it with few work,it would surely not be bad,But I would prefer they work more on other and more important things as last minutes GE(in every quarter and at the end of the game)