Nice Idea.....
I'd like to see them have a go but I don't think it would be viable without some "schedule-izing" of the Low-cost model, such as seat reservations, meals and most importantly......
........a crew uniform in a colour that doesn't give the passenger a headache for +8 hours!
Will the Big E want to change its tune? And its Overheads?
And would the US want to accept(at immigration) the type of pax that EasyJet are famous for flying....."Hen & Stag parties in New York"......I can see the queues forming already. Try telling 15 Highly charged 'Hens or stags' to "stay behind the Yellow Line!".