How about a few features from Gnotella may it RIP (
1. changing the color of files in the results window that you
are already downloading. so your not trying to download
the same file twice.

2. allow right clicking on the results menu to adjust what info
is displayed. exp. host;IP;version; file size an type etc...

3. buttons to prefilter by file type sound, video, image etc.
before the search begins and that are only valid for that
particular serch.

Please excuse me if the features are there and I've overlooked them. I am still learning this client