Prepster,
All of those things and much more are compiled. First pitch strikes, strike percentages, type of pitch percentages, batting average against pitch types and counts, spin rates on all pitch types, location of each pitch, stride length, etc. are all filed.
Probably the thing that has gone over the best with the scouting community is the spin rates on every type of pitch.
The biggest problem with evaluating command/control is it can be misleading in short spurts. We have seen pitchers grade out high on command for one outing and be crazy wild the next. We have even seen pitchers walk several yet they grade out well because they just happen to be missing their spot by an inch or two. An event we just did with lots of the top prospects in the country performing, we had an umpire that simply would not punch out a hitter. So sometimes the actual stats are off base.
Same for first pitch strikes... There are first pitch strikes that get hammered and there are quality first pitch strikes. Sometimes that first quality pitch is called a ball. (fastball on the corner)
Anyway, I know I'm not telling you anything above that you don't already know. We do tend to glorify velocity. Reason is I have never had a discussion with anyone about a pitcher without velocity being mentioned. Yet, everyone knows velocity alone is not enough. An excellent mid 80s will win more than a bad 90+.
For those that might be new around here... Prepster's son is a DI college coach/recruiter and was one of the best pitchers ever in college baseball for U of North Carolina. That qualifies as someone worth listening to.