Yeah, 2022 seems likely, trying to explain why i want Zelda to be playable is one of those things where you either get it or you don't for me,
I like link well enough or else it wouldn't be my favourite franchise, but as I've gotten older, story based characters have become more interesting, to that note, in botw I thought Zelda was much more interesting than Link, we see her less, but her journey and arc is much more interesting, in a sense I felt she was a bit robbed, making link be the one who had to finish the fight was a bit unfortunate, she even hands him the bow,I agree that fits the character who doesn't really fight, but I'd argue they chose to make her that way.
As for how it would work from a gameplay perspective, I would say either a companion you can switch between, or two characters approaching the problem from different angles, she can use light magic and the slate for a start, if you wanted to I'm sure archery could be justified, with practice it's certainly not impossible, she won't be taking out lynel's one on one per say but perhaps the slate is the key here, more upgrades that allow her to decipher a way to take out ganondorf just off the top of my head could work.
it really is in my opinion not hard to find a way to make her playable that both is compelling and entertaining to play, if anything I'm growing bored of links play style, as fun as botw combat is and I suspect the arm will come into play here, Zelda would leave a much more lasting impression.