Is it unreasonable that Seth Macfarlane just gets cast as and plays a good Carl?

There's been a ton of speculation on who will be playing who in the live actions adaptation. Obviously with Macfarlane's company acquiring, he has been talked about before to play Carl. But I feel people should genuinely consider him, because there is a good chance it will be him anyway. I'm not the biggest fan of macfarlane's humor or his previous stuff, especially some of his acting gigs, but I still for some reason feel he would be a perfect carl. If he takes the role seriously - which I am hoping he would because he's a huge fan of the series - I feel like he really could be the perfect guy.

EDIT: Just tossing the idea out there to discuss, he's not my first pick either guys!! A ton of cope happening in the comments.