main benefits for me was same day switching
That's a big one for me too, and I enjoy the extra space seats.
I think JetBlue has really misjudged its market. Most big spend flyers do not fly JetBlue - the network is too limited, there aren't enough aspirational reward options, there isn't a true premium product on non-Mint flights. Many flyers often avoid JetBlue because of the regular delays, but this is especially true of higher spend business travelers. They ranked 9th out of 10 last year in on-time performance.
This is classic JetBlue idiocy - they sold tickets for $49 because they needed the cash and Mosaics bought lots of them. Then someone looked at the numbers and said "Gee, how come our Mosaics are only spending $49 a ticket? I know, lets squeeze them into higher fares." If JetBlue is going to force elite flyers to pay more for the regular Blue fares then why wouldn't I just fly Delta regular fares and earn status with them?
