And, at least in Azureus/Vuze, concerning how you configure things related to number of torrents allowed to run simultaneously, etc., if you want to maximize UL and avoid going "Forced", you have to be pretty careful in configuring how you handle torrents with a certain number of seeds/leeches, etc.
If your aim is to improve quota, or just serve as many torrents as possible, I recommend setting them to forced and set the number of allowed connections totally and per torrent to something reasonable to your network connection quality and speed. Otherwise the client will shut many of them down when it have started to serve a certain number, regardless of scrape results.