Definitely no. It hurts people way more then it'd help.

Right now I get on only for like an hour a day because of the holidays being busy at work, the patch lull, and catching up on other games. I get on, do what dailies I want, then bounce. Making that fee for upkeep would punish me for essicently having a life.

It would also punish people who saved up and now are broke. My next-door neighbor got her small next to (above? It's in Goblet) my medium during Kugane housing. So now, after saving and praying that a spot opens up, and getting it, you want her to now pay extra for getting lucky?