For years I've worked in the sim with 1500 hr ATP's who couldn't fly a plane to save their lives, and 1001 hour restricted ATP's who were prodigies...and vice versa. I don't think its the number of hours but the type. A qualified 141 flight school churns out both winners and losers and it seems to just be random and based on the kid's aptitude themselves. I really think that they only way the ATP hours should be reduced is if they are flying in a crew within the system. Maybe a charter ops and make the restricted ATP 750-1000 hrs. Flying around the pattern in a 152 for 1500hrs hasn't helped anyone I've worked with become a better airline pilot. Just MHO