Mark,
The turf fields have the entire infield surface made up of turf. Bases are set right in the middle of the turf as is pitching and catching area. There are no cut outs in front of the bases, just turf! This is the same surface that Ohio Stadium and many of the high school fields have in that it is the rubber pellets style.
I got put on them a few weeks ago when I had an Adult SP state tournament. I watched a guy slide in front of home plate and almost go to the back stop as he could not stop. The adult players have told me that when it rains and someone slides, they can overslide a base by as much 5-10 feet!
One of the grounds crew who used to umpire for us told me they are slotting 14-17 as the next ones to get the turf and they plan to do 4-6 per season until the entire park is done.
The problem they are having in FP is the circle. They can't put chalk down like dirt. If they get a 35 plate and then have 40 and then even 43, they cant put a circle down. Spray painting it like most places do with foul lines to the fence, and they can't rub it out or get if off the field. They also have no batters boxes. They can't chalk them and they run adult, FP, and baseball on the turf fields thru out the year. I don't know if the dimensions are different in baseball, but thought the box was the same for both SP and FP.
The one shining light in this is the foul lines do not get rubbed out and never need touched up. If they get the circle issue fixed, they will be okay. One thing is they never touch them up. The turf doesn't move or get tamped down. My only thought is that the pressure of the drag foot has to be doing something to the turf around the pitching plate.
To me it seems like it would be great for slow pitch as they can pretty much eliminate cancelations unless a monsoon moves in. FP with 3 different pitching dimensions and Youth Baseball could be problem matic. They do have the throw down boy's pitching mounds, but changing out fields for FP is a problem.