I have a weird thought....
I was playing around with a new paper/developer combination yesterday (this part isn't that important). Paper was the Ilford FB WT and the developer was Ilford WT.
I took a test exposure, developed, stopped, and fixed briefly. Washed even more briefly (basically dunked in paper, swished it around) then toned in brown toner. As expected, toning was uneven and margin had clear case of staining. But I liked how it looked.
What would happen then if I purposely under fix, severely under wash, then tone to cause unevenness and staining. Then, follow it up with proper fix and washing?
Would I get to keep this rather pleasant appearance and (this part is important) staining and degradation doesn't continue after the proper fixing and washing?
The look I'm after is that of old time photograph with stains and degradations - just like one might find in an antique stores.