verizon should let you save the data you dont use at the end of the month and roll it over to the next month. this would be another more share plan idea and make its customers happy.
Rollover minutes didn't work out well for AT&T. I doubt that any of the carriers want to add rollover data to the mix.
I wasn't aware cell phone towers had the ability to store data for later use? Oh wait they don't. If you are paying for more data than you use go down to a small data allotment.