Personally, I would be perfectly happy without a grid. 99% of the scenes on BSGU involve people using meetme/temprooms as it is. But my experience is the same as what other folks have said on the thread: the lack of a grid is a turn-off to some (many?)
See, my experience on BSG:U is different. Aside from the combat scenes, which took place elsewhere, most of my RP happens on the ship. I like the idea of being openly accessible, and it's proven to be ICly inconvenient at times. But that's the beauty of it, I guess.