FranK, you are
The Pioneer of UserTracks, you lead the way into this field for others to learn and follow, and they will you are just ahead of it all. The vast majority of your tracks are very usable and I will use them.
As for Endings and Shots n Holds:
If you have made UserTracks that don't have ending you can easy enough add them as it is just an extra file, same when PG gets the UT Shots n Holds worked out you just add the shots n holds UT file to the existing UT, same as PG do updates to fix or improve things.
This way we will be able to make UTs similar to RealTracks.
Thank you we appreciate all your work very much Frank !