You keep saying that but the Shield among numerous other teams throughout history proved you wrong
The team has a lifespan dwindling by the day. Kofi and Xavier are going to be out of the company within a few years no matter what. It's okay to admit that and enjoy what you and they currently have instead of rewriting history to say "actually the team is a better draw and moneymaker than the individual/s"
The Shield were actively going to be pushed after they broke up, because the management actively wanted to push them.
Do you know what their history is?
History: The three individuals you speak of have not progressed as far as they have as a team since they formed, and none have been as over as they have been (save Kofi for his RR spots).
To say that they'll be better if they break up would imply that management would actively push them, the same management that put them in a shitty gimmick to begin with because they really didn't know what to do with them in the beginning.
So no, I'm going to go with the angle that they are good together right now, then they are apart.