Need a on/off feature to switch on auto-disconnect from non-sharing hosts, that is from incoming hosts that show zero files in their share directories.

Maybe set a user chosen minimum number and/or total MB of shared files. Make incoming hosts earn the right to connect to me.

yeah, i agree. i know a lot of people who don't let anyone download from them at all because they say it slows down the stuff they are receiving. who needs a network full of leeches!