So my assumption is that gravity is a form of torque and I’ve previously related it to spin. This would still require a medium and the most immediate would be the potential present in the vacuum of virtual particles.

Would gravitation be the absorption of the virtual particle potential from the vacuum. ie; the presence of particles stimulates momentary (partial)formation and subsequent extinction of pseudo/virtual particles? This sort of production/extinction cycle should still be governed by conservation of momentum which would most obviously be expressed as gravitational action between defined particles?