Oolite would be somewhere inbetween, but does it lean closer to video playback or to hibernation?
I will repeat my earlier finding that oolite is the single most CPU-intensive app I run. When playing a fullscreen (1600x1050) video, mplayer uses around 6% CPU according to all data I can gather. Oolite, on the other hand, runs about 60%, with occasional spikes higher.
I've recently verified that this is true of trunk as well as 1.73.4. But hey, it's a complex app with a lot to do, so I don't really find these data surprising. If it were a runaway idle loop or something like that, it wouldn't stop at 60.
I don't know from netbooks, but I would assume that oolite would drain batteries like a house afire. For your sake, I hope I'm wrong!