That is Macchiavellian bullsh!t, and a false distinction invented to excuse the moral failings of leaders.

Except that was her complaint about Elaida - she was not being nice enough and violating her constitutional limitations on her powers! I don't care what your fantasy worlds are like, in WoT, there are laws and rules curtailing the authority and power of the Amyrlin Seat, which Egwene acknowledges by criticizing Elaida for violating them, while hypocritically ignoring her own violations, even in her head.

which does not actually exist, except in your fanfiction...

A pair of arrogant, power-hungry tyrants, who elevated themselves to religious figures, abused the ancient and traditional rights of their countrymen, murdered large numbers of people for personal convenience or pique, and are known to have been vain, immoral and selfish people whose political skill did little good to their nations and actually served more to accumulate power or status for themselves.

They did NOT do "superbly well" by their nations. Rather, they created the conditions that caused people to flee and found colonies where they could live outside of the stifling atmosphere of the nation reshaped to glorify its monarch. They tyrannized their own people, incited rebellions even among people who honored and respected the position and person of the ruler, and abused their powers to enrich themselves.

How is a determination to place the Aes Sedai's petty status issues ahead of the most important man in the world realism?

I thought the problem with Elaida was that she was too tough?

What the hell is wrong with the Tower that this quality is so rare? This is not a heroic or insightful position! The penalty for being a Darkfriend has been death as far back as the AoL, as it should be! Being capable of pronouncing this sentence is not an indicator of moral courage or political skill, it is merely doing the obvious right thing! A failure to do this is an evil and horrible act. All Egwene shows by doing this is that she is capable of doing the right thing when it stares her in the face and she has no reason or motive to do anything else. What, pray tell, would be a reason for her to do otherwise, that makes this such a smart or noble action on her part? Without such a reason, it does not take much to do this.

And you say this about a woman who favors the Greens with absolutely no reason? Getting rid of the factional hatreds is a nice pipe dream for the long term, and utterly irrelevant for Tarmon Gaidon.

You mean a puppet for the capable people, like William & Robert Cecil and so forth? If only we could be so sure.