Don't expect to see p.s. or anything approaching it anytime in the next 3-5 years on TCONs to BOS, IAD or EWR (the latter two being hubs).
1. No competition. Neither AA nor DL offer their premium service other than xJFK.
2. Likely no market for paid F other than LAX (movie industry) and SFO (private equity + tech sector).
Bear in mind that there are no CPU's on p.s., so you either burn a lot of certs or miles if you are a regular. And, if you're not a regular, F is F is F.