Ok, here's one more. I remember seeing something in pd-l2ork/purr-data where you could select a few objects and turn them into a subpatch.
you'd select something like 5 objects or so in your patch, then hit some shortcut and there'd be a [pd] subopatch created with those objects inside.
The thin is that I can't find this feature anymore, could it be that it was discarded? Maybe Jonathan can tell us. The thing is that if it were still implemented in Pd-l2ork, it'd be a good case to also bring it to vanilla...
cheers