This was the obvious intended idea back when they actually had Austin/HHH in mind for next year's Mania, because no way was Austin portraying a heel or defending a heel (though Vince was still his biggest nemesis of all time.) So no surprise they still want to go in that direction even without Austin involved. Makes no sense, of course.
I'd love it if they went the WM23 route where you have two businessmen (Vince/HHH here instead of Vince/Trump) choosing people to represent them in a match, and you could highlight two (young) superstars in a big way like the way Lashley/Umaga were. But I guess HHH not fighting for himself would make him look weak as long as he can still go, not to mention I can't see him NOT performing at WMXXX unless he isn't able to, and he is.
Bryan/HHH would be awesome but HHH would have to be heel and turning him heel during this angle is Blue.