Nice work Dave. It looks to be informed much from various table saw
versions. The double sided edge guides is a real nice innovation.

The only addition you might consider is a removable (thus replacable)
backer. On the original setup you'll get good backing. However on
subsequent uses the backing will wear down a bit and yoiu may need to
run the cut up a lytllie higher each time so you don't get breakout,
etc.

If you had an insertable backer you could start witha fresh backing
plate to avoid tear out and go to smaller cuts or have an easier time
during setup, trying different heights until you get it just right,
then start the real cuts witha fresh backer.