Full season pickup means jack es, these days. Revolution is made in US, not Canada, so I can imagine it has almost Terra Nova costs in locations and green screen post production. On one hand three month hiatus is absolutely necessary for those type of show, in order to shoot remaining episodes after network burns through initial order, but on a downside, it's usually during those long brakes that
a) network realize they can maintain decent viewership in that time slot with something like American Model Talent Dancing On Ice at fraction of the cost
b) studio calculate just how much maintaining quality for the remainder of the season will cost, they then make "adjustments". You then end up with half the episodes at full price and half shot as purely "filler" - you know the type - two part episodes where half of the cast hides in a shed/stable/cave with two camera angles and discuss "meaningful stuff", or await for one of the characters to awake from coma, sob and tears up a lot for 45 minutes while the rest of the cast get about 5 minutes of screen time, filled with them walking around the same jungle set in circles. All of which is propped by brief appearance of some outsourced "celebrity guest star", typically someone picked from "weddings/barmitzvah/birthday stars " agency catalogue, some dude that was once fifth in command on the least popular Star Trek spin off, or a girl we didn't give monkeys about in second half of the "Lost" (oh wait, that's already main cast).
I don't see Revolution surviving full season. The show just doesn't know what it wants to be. And ends up doing all the wrong things and making basic casting mistakes. Most of us probably hate the kid they are all trying to rescue. Isn't the rude uncle, his flag tattooed lady friend or even the fat geek more interesting to watch than lead actress who cries a lot and constantly drags episodes away from interesting action? How often in the middle of the episode do you find yourself wondering what evil is Gus from Breaking Bad up to, instead of what good is Charlie trying to do? Character scripting in PG series is really simple. At the end of the day - if you were a kid, and you were playing "Revolution" with your mates on Sunday afternoon, you know, the way you were Han or Luke or Chewie back in a day, who would you be? Right? That's what scripting of action series is all about. Who do we support? Who do we cheer for? Stupid kid? Whiney sister? Confused mum doing nasty stuff for food? Well, there is your necessary focus change for the second half of the season.
I think in the middle of hiatus the episode order will be reduced and best we can hope for is one season. Then just to urine everyone off, the network will decide "not to order second season" over the summer so it all ends with some complicated cliffhanger and no conclusion. At best.