A teacher pal and I were just discussing this.
For me - smaller classes. From 30 to 20, it'd be a dream. Currently I mark 60 English and Maths books almost every night and it's bloody hard going if you're actually going to be constructive. And the time you could give to each child would be brilliant!
For my friend it was more powers to exclude violent/disruptive pupils. (He's secondary.) He's struggling with some fairly outrageous behaviour in a failing school and is feeling very, very down at the moment. I don't necessarily agree with his comment, but it was an interesting discussion.
How about anyone else?