It might influence whether I find First worthwhile, especially if I know I'll be hustling to SFO at the end of the workday. No doubt, it's usually at the bottom of my list of factors, but not always, and that's not the case for everyone. And I realize that, even on the UA side, the premium lines can be sluggish.
I can also understand that VX would not guarantee priority lines in a shared terminal, which is why we'll just have to wait and see what happens once they're in T2. But I wanted to get them on record given the speculation in this thread. I was also peeved that they didn't respond to my e-mail in a timely manner.
In any case, SFO and its carriers should aspire to have generic premium lines for both Terminals A and G, given all the premium traffic on the various carriers there. It's such a modern facility in so many ways, save for that aspect. While the lines seem to be dreadful mainly during certain peak periods, it would still be nice to have that perk.