Well, ABC is looking great, and has just about every feature that I could want except this:
A method of setting up files to auto-seed when certain requirements are met. Files that are set to auto seed could check the seeds/peers every 15 minutes or so to determine when it needs to seed. Of course there should be plenty of options to configure just when you want the auto-seeding to take effect. For example, there could be options so that auto-seeding wont kick in if you already have a certain number of transfers going. Maybe be able to set it so that the files that have the largest peers/seeds ratio get seeding priority.
Hopefully this will be a possiblity. It would make the best bittorrent client even better :) I really appreciate all the work on it so far, it is really great!