I would love to see more ecigs in more places but for a lot of the same reasons others noted, it will probably never happen.
Even the few smoke shops in my area are only selling the cig2o's (last I checked $15 for 3 cartos

) and when I asked them if they ever planned to offer or even considered any of the other brands or just reselling from an online vendor like v4l, they just laughed...
They make the bulk of their cash from the tobacco and have no intent of killing that cash cow... even though yes there is money to made, there is more to be lost... bottom line.
Not completely relevant but Ive kind of related the ecig market to the pc market...
You have a few cheaply made, but heavily marketed brands (dell,hp,lenovo) shoved down consumers throats and thats what the average person will buy... just like blu, njoy and cig2
However, you will always have the geeks that know there that know you can build your own pc thats 100 times better and at a fraction of a cost... and yes we are the geeks!
The best we can really do is educate the people we see buying them in gas stations and let them know there is a better and less expensive way out there... Carry around a few extra business cards from your favorite vendor and give them one... if no one is around to give one to and one 'falls' out of your pocket and lands in front of/next to the blu display... that wouldnt be a bad thing either

Even if you can at least inform the gas station ecig users that its possible to refill the cartos a few times, they might be more likely to make the switch...
Back to the OT... I think what really needs to happen first is for disposables (not blu,njoy,etc... but
our vendors) in vending machines at bars, bowling alleys, etc... thats the only places that really wont care much about the profit margins since they dont make much off them anyway... but if the business owners were to get a little bigger cut and not have to kick their patrons to the sidewalk to enjoy the product (in NY, not only can you not smoke in bars, but they are not even allowed to put up awnings or any other structure for smokers) they will probably welcome the opportunity! Win-win for all...