Since I knew Classic Who, I was able to say things I like about Classic Who to guide suggestions. You could still at least say what you like about nuWho and what enemies you like, that'll help get you in the Right Direction.
I like the mixture of the whimsical, funny but also sometimes dark personality traits of the nuDoctors. I donīt have any special preference for any of the recurring enemies, I like them all. I love the stories that have a bit of a fantasy theme to them or generally stuff with "one shot monsters".