I actually think last year was quite varied for song choices - we got modern songs in Changing, All About That Bass, Thinking Out Loud, Chandelier etc and even more varied older songs like 500 Miles, Its A Shame. Granted we got the same old Man in the Mirror, Listen, I Have Nothing, Hero, Feeling Good (and poor old Andrea got saddled with most of them) but youre always going to get that, they clearly pull in the votes and go down well.
This year I think (hope) we will get a bit of variety in themes - Cheryl said last year she was frustrated with the same old boring themes and she does appear to have some more influence. I'd like to see less genre and artist based themes and more broad ones offering a bit more flexibility. A current top 40 theme would be good - I have no problems with UK themes, number ones, USA, Halloween week etc.