Doctor Who season four, brief thoughts about fic I like to read (and write)

I finished watching Doctor Who series four right before the end of 2009. ( short reaction back here )

I need to make a post on how Donna Noble was beyond awesome. But I want to get this out of the way first. ( what I like to read/write in Doctor Who fic, compared with BSG fic )

Current DW fic ideas I have: that BSG crossover fic and a Mickey Smith story in Pete's World (5 people Mickey kisses/is kissed by). and maybe a Martha/Mickey story, just because.