You're never the only one to think of something.
I've not heard of this yet, maybe for good reason, maybe it doesn't work, that's why.
My mom asked me the best way to get rid of a stump and my condescending thought bubble came up ("I would see it as a challenge, grab one shovel, one axe, and conquer"!)
I told her "I don't know" because I have my own stumps to deal with.
Then in my incessant quest for knowledge I stumbled upon hugelkulture.
Then I used my
permaculture mind and thought, hmm, why not purposefully grow
trees, harvest the young
wood, then plant a "hugel potted plant".
Instead of a giant mound, where you have to cart things around, and dig a giant trench, why not build circles.
Now let me elaborate.
Hugel over the stump, then plant a tall growing plant in the middle, let's call it a tomato.
On the outer edge do an herb, or two, let's call them basil, and oregano.
Then a pest control flower on the sides.
Give it a slight slope to the south.
On the north facing side put your favorite "mulch" "green manure" so that part way through the season you have your fee mulch right there.
Lastly dig a moat (I'm not saying
swale) 3/4 of the way around the north side.
Just think how stable you could have a stake in a stump, before you pile on the manure and
carbon.
I'll bet someone else has already thought of and done this, but I'm bout to go try, so good luck folks I'll be back.