Well, since most of the House Republicans were too stupid, too idiotic, too much of a liar, and too much of being a Trump lap dog, to actually help out on the January 6 Commission, then a 7/2 makeup of the January 6 Commission is the best that could be done.
And if the Republicans do not like the 7/2 makeup now, then that is too bad for them because they had an excellent opportunity to get involved about 18 months ago, but they thoughtlessly squandered that opportunity.
So now that some of the Commission work is being broadcast on national TV, then it is simply too late for these foolish Republicans to fret about the 7/2 makeup today.