This has been a very interesting topic of discussion with some passionate debate both pro and con, thank the Lord we live in a Country where all people still have the right to post their opinions. First, I must state that I do have a pony in this race ( I am a APA LO) but I also play on a BCA team so I hope that the opinion I express does have some merit.
Concerning slop, here is my opinion: As a "7" in 8 ball when matched up against 6's or 7's there is a slop shot is made on a rare occasion, usually never effecting the over-all outcome of the match. When matched up against the 2's, 3's or 4's where slops shots may happen more frequently in a match, I feel I still have the upper hand at winning these matches based upon my greater skill and experience in these situations. But let me tell you a "7" versus a "4" is a very tough match to win.
Pool leagues and the growth of pool: I sincerely believe there is a place in pool for any type of structured league, pool halls and bars needs league players to keep the doors open so that we all have places to play the sport we so passionately love.
I will close this post by encouraging all players to find a league that they enjoy, be it APA, BCA, VNEA, TAP, etc and support our sport so that it continues to grow. I will step off the soapbox and defer to the next posters opinion.