
@jro, if you mean time before rule apply etc, then good suggestion(as there already is 'seeding_time' status-field in deluge, though haven't checked if column available for this in gtkui by default though). BTW, the seed_time plugin has a deluge2 fork I see, but not updated since long, so don't know if still work - rename the '-py3.x' part away from filename before adding plugin, if not knowing your py-version, or if not in your py-version(Edit: Not needed on deluge 2.0.4+, I forgot).
https://github.com/vanossj/deluge-seedtime