Feature Request: Advanced Rules for Groups

Hello! Thanks for the great piece of software, and the inclusion of groups has made managing hundreds of torrents much easier than it used to be with rTorrent. That said, it'd be awesome if advanced rules could be assigned to particular groups: say that I only want to seed torrents in the "public" group to a ratio of 2.0, but in a "private tracker" group I might want to seed my torrents forever or until there's been a week of inactivity. Thanks again!