I think this is badly needed. Being able to get VIP that only burns while you're actually in-game could be a lot more cost effective than the current system. A lot of people often avoid such subscriptions for fear of wasting so much of it.
Thats something i am realizing now, as i sit in que for hours, swapping between different characters hoping to find a match. I'm in america on the west coast, so when i can play, the majority of the playerbase is asleep. Seems like i have a very small window where i can actually make good on my VIP time unless i stay up all night (which i've done a couple times)