Good deal, very nice app, it's replaced tomato as my primary bit torrent client now that the cpu usage has dropped a great deal (only about 10% usage on my 600MHz iBook, please don't laugh :-). A couple of useful UI things are necessary though:

1) A columns sub menu in the "view" menu to turn off certain columns.
2) Allow a default downloads folder if the user wants so that each torrent doesn't have to be saved manually.

But those are small things and beyond that it's a sweet client.