This was always only ever a typical IAG spoiler to stop Virgin getting a decent foothold.
Covid did that for them, so the stagnation was inevitable.
This could have worked so much better as a Level style operation and a dohop partnership giving easyjet and jet 2 feed on the MAN side and a US southwest/spirit/frontier feed in the US.
As others have said, neither Virgin or Norse have the frames and it would be a HUGE punt for norse, I suspect a good move for them but a risky move.
AA might jump back in to keep a "oneworld" presence in the JV, but you would hope that Virgin under its new leadership might reinvigorate the "Home in the North" mantra especially as they have virgin holidays to support some routes and the benefit of Delta feed and connections in the US.
Add in a dohop partnership on the MAN side and you get Loganair, easyJet, Jet2 feeding the routes without the operational complexity.
Theb dd the IndiGo & Skyteam partner routes into the mix and this could be a boost and finally realise the potential for MAN as an alternative connection point.
I do think MAG / GMCA / Visit England need to put some effort into raising awareness of not just routes but the existence of a quality, friendlier entry point to the UK perhaps add train connections to make a 1 ticket seamless trip from US > MAN > LPL / EDI / LON etc
Will United come back and enjoy links to Star partners ? - less convinced tbh but Turkish, Egyptair and Singapore *might* just make it workable.
Other than that we are left with JetBlue who are certainly not to be sniffed at, none of the EU groups have any appetite for "LoCo" transatlantic and JetBlue have a great product.
Jet2 maybe one day, but tui seem to be retreating, might we see condor?
MAG need to lobby HARD to get the additional re-screening rules removed to ease connections and 5th freedom flights, if the connection Product could be as good as MUC (another secondary airport albeit with a home based carrier), they would have something pretty special to sell airlines especially as they have 200+ destinations served.
Maybe add US pre-clearance back into to Pier 3 plans or even add it to part of Pier C as an interim and then they become a real contender.
A punt that needs investment yes, but all doable and with Mike Kane as local MP, surely he, and the Mayor will have the ear of Heidi Alexander.
Very interesting times ahead, but the priority of course is the EIUK team who are affected and whatever happens i wish them all the very best.