So what we're doing if he never gets off the throne?
Not doom posting, just offering a different perspective: What if hoyo really never intended for Capitano to be playable and doesn't have plans to bring him back. That his arc is done, that he was really created just to be a plot device to save Mavuika.
Theorizing, speculating, seeing signs, all of that is fun and all, but there's hopium and there's hoyoverse's wishes as a writing/narrative/developing team.
And if that's the case? what's the plan?