I thought it was one of the better episodes of the Tennant era. For the first time I actually liked Martha.....which isn't to say that I disliked her before, just that she felt more like a cog in the system -- just someone necessary to keep things moving along. The scene where her Hath buddy died had some emotional resonance, even though Agayama Freeman did her best to ruin it with some cornball acting and the director made the situation stupid with awkward staging. Is she a main character on Torchwood S2 now?
I certainly liked hearing more about the end of the Time War, even if it told us nothing that we didn't already really know. The writers have been teasing us with the details, and I hope they have a grand reveal planned sooner or later.
We are still looking at 2 years without a proper Doctor Who series -- it looks like the showrunners are keeping their options open for filling up that time with side stories. While I kinda like Jenny, I do hope they do a spinoff with Sally Sparrow instead.