There are many features that would be fun to implement, but of course it's impossible to add them all at once, so I have to choose what to add first. Here you can help me to make this decision. You are able to select only one of the features. Choose the one that you think will be most useful for your server. Also you can explain why you think your choice is best. All the input is appreciated.
[edit: WOM client detection - removed because it will be implemented with the next release anyway]