Actually, a synthetic mound is much more preferable to the present dirt mound. Some pitchers for unknown reasons seem to have an affinity to digging holes where they land and against the rubber. Makes no sense since major leaguers don't do that (or can't do that). I guess they think the 'downhill' stride gives them a mile or two extra on their fastball. Also, I have yet to see anyone slip and slide on the synthetic turf with proper cleats, so pitching off of a synthetic surface will be no different. Plus it will be safer than breaking an ankle in a 2 foot hole dug by the other pitcher. Obviously, batters have adjusted to synthetic turf in the batters box. They can't dig a hole to put their back foot in. That never made sense to me either, why someone dug a hole so your back foot was 6 inches lower. Maybe cause I was a singles hitter and preferred to be on level ground.