This is wonderful news! In the early 2000's I used to be based in EUG and flew to BUR via SFO often. Mainline was usually the last flight out in the evening from SFO to BUR. Often I would be booked on a earlier UX flight but almost always missed it due to typical SFO delays coming in from EUG on UX. In those days UA always immediately protected me at check-in on the later mainline flights to BUR. If I recall sometime around 2008/9 they also very briefly reintroduced mainline to EUG? Anybody remember this? It was after I re-located so was never able to fly this service. I would hope the return of BUR might be a sign of good things to come on more regional west coast routes.
Oscar's recent comments about putting more service routes currently on UX back to mainline and Kirby's comments about expanding LAX are both fantastic developments! I was also an old regular on PDF-LAX routes and it would be great to get that back so there is actually a *A option again.