Wandering monster enhancement: home room?

[Zuljita]

using this for inspiration: http://gurpshexytime.blogspot.com/2018/08/dynamic-dungeons.html

[Syndaryl]

I like this idea, but I'll need it described more concretely to implement.
Taking a stab at a hard specification:

1. Populate all lairs with a monster type and hypothetical count.
2. Examine monster types found in lairs and designate some groups as "potentially wandering". As the algorithm currently can put monsters technically too big for corridors in rooms, I would for the moment want a pass checking for appropriate size at the least.
3. Generate wandering monster table from "potentially wandering" monsters, and possibly some lairless filler monsters. Note origin lair for each monster as appropriate.
4. adjust encounter descriptions for "Potentially wandering" monsters as Xd6-Y in lair at the moment rather than a fixed value

Problem to be solved that I see:
CER calculations and everything that interacts with that.
What to do with mixed-type rooms.

[Zuljita]

Other option: take the monster list, and apply chance to wander to it.
then generate the table from that.
maybe add a few hallway monsters.