I learned about this announcement from an elevator (pic below) so it's getting broad coverage. It seems like a great concept.
One idea I've been thinking of: Crown an "overall champion" based on highest World Athletics points score across all events at the Ultimate Championship, and cover it with that as a central focus. T&F is so disjointed as it is, I think this would at least add an overarching theme to the competition.
Of course, to make this fair there would have to be pacers / lights in all the distance events, but I don't see why they can't do that. It would be cool if the pacing lights of e.g. the men's 5K were set to whatever exact time they would need to, for example, beat the women's 100m score. Considering this will be held on Olympic years, I don't mind having time trials as long as the result matters and the athletes buy into it.
If the WA points tables have historical bias then maybe they could be weighted to the last two years of competition per event to give everyone a chance.