I think they will use age alone without admitting anything else is wrong with Biden. It saves his image and gives them something they can use against Trump (similar age) to say nobody above a certain age should be POTUS.
Concerning the Age thing may be the most benign line of attack, but Biden will still be exposed, thoroughly destroyed for high treason.
That “10% to the big guy”, is what it is. Biden used his son as a mule and his brother for the bank.
Cain lives.