I quite like this take! The trailer (iirc) showing us Miquella on Torrent and then the ‘promise me you’ll be my consort’ line quite strongly implied there was an outcome where the player could consort Miquella as they could Ranni; the fact that Miquella then goes on to barely acknowledge the player feels like an enormous bait-and-switch.
Can you imagine how satisfying it would have been to visit the various crosses and each time feel more and more like you were signing your life over to Miquella? That he, like an insect, was slowly weaving you into an adoring web, and leave it entirely up to player interpretation whether that was willing or not?
If you could do esoteric things (such as, say, dying four times to St. Trina…) to stave off Miquella’s influence and turn against him at the end. If you could not do that and resist him anyway, but you’d be fighting with a massive debuff (an extra challenge mode for all the ER players who love that sort of thing).
If you could opt not to resist at all and have an alternate ending fight against an avenging Ansbach with the Formless Mother on his side, just to bring home that you might just not be the good guy here.
Ahh the missed possibilities!
I do think Godwyn (rather, Godwyn’s still-soulless remains) would have also made more sense than Radahn: Miquella was already trying to do something about Godwyn, it would’ve been a better link to his full-blood brother Mohg as a vessel, and Radahn interfering with Miquella’s fate/possibly also with the eclipse would have been a plenty riveting reason for Malenia to war with him. And we could have had a cool mermaid-horror-themed boss out of it, tying in with Miquella’s siren themes.
BUT, I do also fully get the counter argument that Godwyn is dead and should stay dead. Like that is the whole narrative. He’s gone and no-one can do anything about it.
I will say, what Radahn is good for is demonstrating that Miquella really isn’t going to be any different from Marika. We get hints that Marika too started with good intentions (she also wanted revenge, but I believe she removed the rune of death thinking it would make the world better, not worse) and we all know how that ended up.
Radahn also actively venerates and emulates Marika’s consort Godfrey, the lord of war, and Freya mentions ‘war eternal, to invigorate the soul’. So we already know that Miquella’s Age of Compassion is only going to be compassionate to the people who agree with the system. Now doesn’t that sound familiar??
Anyway yes, there is a point to PCR, and ways he outperforms Godwyn as a Narrative Instrument, but I don’t think he outperforms the player. And it would’ve been WAY COOLER if we had been the Promised Consort all along.