Another silent from WB that exists is John Stahl"s wonderful film "Memory Lane." I saw this several years ago at Film Forum and have wanted to see it again ever since. It's a First National production from 1926 and lacks a pre-recorded
score but it certainly deserves a release.
Great list - I would add The Prince and the Showgirl, a proper release of Around the World in 80 Days, and The Devils (I know, I know but they could license it out - it's a great film that has aged well.)