Since I did not receive this e-mail, let me reply to my friends at Jetblue now -

the questions,

it seems like they are at least playing with the idea of monetizing the extra 4" of seat pitch by offering upgrades at check-in Isn't it 2 inches???

paying extra for aisle/window NO

and front of plane seats NO

They were also questions about how limited or full internet access on flights.
Yes, they can charge for this. It is a new (and extra) feature. Not everyone will use it (as opposed to TV where 90% of the passengers use it).

Another question was about how comfortable I was for paying for
curbside check-in NO

priority baggage drop off YES (if it had a guaranty of five minutes or less)

and priority boarding NO, but if they do it they MUST police the number and size of carry on bags by those people that do use this service.