wanderer as nahida's right-hand is perfect. they both have a history of abandonment, neglect, and exploitation, plus for similar reasons.
nahida was imprisoned in the sanctuary of surasthana for centuries, left to wither as a failed god her people chased the shadow of a 'better' ideal: greater lord rukkhadevata.
wanderer was abandoned by his mother in shakkei pavilion because he was the failed prototype for her ideal ruler of eternity: a puppet who could execute the lightning's will without regret, whom she intended to create after having makoto die in her arms.
the people involved in wanderer and nahida's pasts - both, in a sense, have convinced themselves that their actions were for the greater good. the sages don't even see nahida is a god, much less a human - to them, all she is is the reminder of what sumeru once had and never could again.
raiden ei abandoned kunikuzushi because she saw him cry, and, knowing he could never be the shogun she needed, left him to his own devices. it's been stated in canon that ei believed she was setting kunikuzushi free. and maybe she was, during those dark days after inazuma's first archon died. but, perhaps, what drove kunikuzushi to assign her actions as 'abandonment' was the fact that he was, in a sense, a lesser god. that he was created for reasons he didn't know. the first thing kunikuzushi did upon creation was cry - in the same way that a baby's first instinct is to cry, because their first impulse is to seek help. from this perspective, the thing kunikuzushi needed the most was guidance and acceptance from his creator (because he knew he was created by someone), while the thing ei thought he needed the most was solitude. miscommunication in the delivery room, am i right.
raiden ei's motives were not the same as the sages - you could argue that she really did believe she was doing it for kuni's benefit. i think she did. but what stands is that both these acts feature a theme of abandonment and neglect. they were carried out by people in the aftermath of grief, executed as neglect upon the people they were done to. and these acts catalyzed nahida and wanderer's development into the characters they are now.
they are not the same as the other archons.
venti's arc is focused around mending the wounds of the past, though it could be implied that he is re-assessing what "freedom" means for his nation. zhongli stepped back as yanwang dijun to allow liyue to move forward on its own while he could re-integrate as one of their common folk. ei is brought forward to re-evaluate her decisions as inazuma's absentee god.
good or bad, they all have experience with being a god.
nahida doesn't. she was intentionally kept from fulfilling her duties as archon for hundreds of years. anything she learns now, once free, is the first time she's learning it as kusanali.
wanderer can't. he tried. he took the electro gnosis and tried to transplant it into his own body - but, at the moment as we know it, gods technically can't be artificially created. the closest dottore could get was a mimicry.
so you have this unique circumstance, where nahida and wanderer both have no idea of what being a god really entails. but they don't need to know what being a god is like, do they? they just need to know how to be an archon: how to protect, how to decide, how to execute.
nahida is very forgiving. in my opinion, she's too forgiving (only because i hate the sages and would've called cps on them if i could). she sees the best in humanity. she works to engage with her people. she tries to listen to their hopes and dreams while moving towards a collective vision for the nation.
wanderer is cynical. he's been betrayed three times, in his words, and been taken advantage of far more than thrice. wanderer has seen the worst of humanity, and he continues to carry this critical eye. he's not afraid to do what nahida can't do (go undercover + beat up people) and he's not afraid to confront people when their motives stray towards the worse.
wanderer can demonstrate the things that define the worst of humans, while nahida can show wanderer the things that make humanity worth preserving. wanderer can execute orders with precision and make decisions on the fly (ha), but nahida is here to level his head and point out clues, motives, or implications that perhaps were not considered before.
and, isn't it a fitting conclusion to the sumeru archon quests? two former puppets, both alike in dignity, in sumeru where we lay our scene. together, they can reconcile the pains of their past - and together, they can build a better, kinder future together...the kind that both must have, at their worst, dreamed of living.
