All very fair, very reasoned, very well-thought out and articulated points.
On paper, Hodgson is the better candidate right now. But he is hardly proven and is still a risk. And if he is successful here, a crapshoot as to whether he stays or turns us into Xavier.
GMAC is the lesser candidate on paper, right now. He is also unproven and a higher risk. But, if he would be successful here, you could have strong continuity here for the next 2+ decades.
It really depends, I think, on which criteria are most important to you.