Another major problem is that if there was even 5+ top tiers among them why not just put an end to the great pirate era lmao
The balance literally exists because they cant
knowledge maybe?
If the gorosei and imu turn out to be exaggerated powers, as or stronger than the admirals, the non-elimination of the piracy system could be explained by several reasons (since it has the raw power to do so
1; they cannot because they should not, the gorosei and especially the existence of imu have remained hidden for secret reasons, perhaps the gorosei and imu are as old as the ancient kingdom and their mere presence or that is known about them would confirm many things about something that They try to hide (something they have denied forever)
2: maintain a status quo, piracy is what war is in our world, an incentive and a deterrent. If people are afraid, they go to the GM and there is no subversion, which leads to world population control.
3: they do not do it because it would mean mutually assured destruction
With the pirates there are at least, or there were at least 4 yonkous, mihawk that is level one, many very powerful pirates that without reaching that level, their number is too high (doflamingo, moria, luffy, law, kjid etc) and the number would greatly overwhelm the navy and the GM.
then, a direct confrontation would mean an unprecedented destruction
well, that's what occurs to me