Without underestimating Miocic, but I think a fight between Jon Jones and Miocic will be unbalanced. Even though Jones is the GOAT in LHW and Miocic is the GOAT in HW, for me this is no longer a GOAT vs GOAT fight. Jones may still be in his prime, but the fact we should know is that Miocic is almost 42 years old and that is a very old age for a fighter at the highest level in MMA. His speed and reactions were no longer the same as before. Especially with the brutal knockout when fighting with Ngannou. So if the fight does happen I think it will only add to Jones' good record in the UFC before finally deciding to retire.
We all know that. I like Stipe, but he's effectively retired and just coming back for his goodbye big-money fight. Jones wants to fight him also for the money and to seal his legacy as the best pound-for-pound fighter, but speaking about sport challenge - Aspinall is much more dangerous.
It would be a shame if Jones Vs Aspinall never happens, there aren't many heavyweights that would be good match for Tom, maybe Almeida could cause him some trouble with his jiu-jitsu but other than that, there's nobody on a similar level.