The problem with 10-ball is that it's just not as "viewer friendly" as 9-ball (I'm basing this on the recent 10-ball championships, which I watched quite a bit of)- call shot, no slop, no 10 on the break, etc. make for a purer game, but not one that's as much fun to watch as 9-ball, imho, and anything that will cause fewer people to tune in isn't helpful to the growth of the sport..