[Bajoran Rogue]

I loved it!
I like the couple of hints at the Time Lords' deaths, the state of the TARDIS, Rose had to hold on to various parts of the control panel showing it to be in a poor state of repair as perhaps the Doctor couldn't get replacement parts. The "Time War" was a bit of a more obvious reference, I wonder whether the gas beings were on the Time Lords side or opposing them.
I liked the gas creatures, they were a really interesting concept, the idea of them traveling through gas was well used, traveling through the gas pipes, being a reason for them possessing the dead, the way of getting them out of the dead.