smf allows a cleanup schedule to be set per forum and its very useful.
for example for forum 1 run cleanup every x weeks/days/hours and delete anything older then x week/days/hours, while sub forums could have their own schedules or follow the parent.

its actually set during the creation of each forum, and of course can be edited later.

this is super useful.

while the m32 delete old topics mod is very nice it does not allow multiple schedules.

^Is this what you are looking for?

close but there are many items (rss imports example) where archive isn't really good (actually kind of bad) but where deleting all (permanently) on same schedule also isn't best.
archiving has a role to play, I am glad to see this, but the ability to clean specific forums as needed independently of each other would be really useful too.