Miters for me are paper templates and files. If it's possible, I'd like to see the orientation of the top tube miter templates changed to match each other. If they were the same (as in center of the template being either the top or bottom of the tube), it would be much easier to use one center-line to keep miters in phase.
I find it far more difficult to orient the second template where the ends are referenced, and it usually ends up out just a touch out of phase as I'm sneaking up on the proper length. Unless I'm missing the reason for the current setup, I think it would be very helpful.