Doflamingo is too weak to be an Emperor (He's a best a Commander if you need a fourth one)
His crew is too weak to support an Emperor (A Flying Six or 2 and then a bunch of Headliners at best)
No Allies (dude was too stupid to even accept an overly loyal dude like Bellamy so who else has a chance?)
Meh Territory (he had Dressrosa but that was only because he was a Warlord else he would have to run)
I think he and his crew had the potential but got lazy after taking over Dressrosa and squandered it all believing they're hot shit not realizing that they could be ended at the whim of a bunch of people. Doflamingo had an overinflated sense of importance thinking he was holding the New World together yet his defeat made no difference to the actually important groups. Kaidou didn't even kill Luffy over the Smile instead tried to recruit him and didn't even bother going after Law opting instead to go home and get drunk again.
His crew is too weak to support an Emperor (A Flying Six or 2 and then a bunch of Headliners at best)
No Allies (dude was too stupid to even accept an overly loyal dude like Bellamy so who else has a chance?)
Meh Territory (he had Dressrosa but that was only because he was a Warlord else he would have to run)
I think he and his crew had the potential but got lazy after taking over Dressrosa and squandered it all believing they're hot shit not realizing that they could be ended at the whim of a bunch of people. Doflamingo had an overinflated sense of importance thinking he was holding the New World together yet his defeat made no difference to the actually important groups. Kaidou didn't even kill Luffy over the Smile instead tried to recruit him and didn't even bother going after Law opting instead to go home and get drunk again.