I was against The Shield being a part of a larger stable last year with Punk and Heyman but at this point, why not. If they're gonna make the McMahon family the center of the show and have them handpick someone (Randy Orton) as their own personal Corporate champion, then you might as well go all the way. The Shield could fit in with the group well, serving the bodyguard sort of role that the Big Boss Man did (or the Acolytes, if we're talking the Corporate Ministry as well.) This is assuming they weren't just a hired hand for one night only, or even periodically like they were with Heyman (in the case of the latter, you might as well make them part of the group since they're gonna be doing physical work that's gonna benefit you so often anyway.)