Really? Mason got dropped a few weeks ago. he is talented but I have not seen much at NRC and even QPR level for that matter. Playing him at Super Rugby on what I've seen will be a big risk. He needs 2-3 years of development IMO to develop & harness the full range of skills to a 10 needs.
McIntyre is a known quantity, albeit not much. He has 1 year left on his contract. Realistically if QC (Quade Cooper) goes down, any slim chance of a successful season is going with it. They have invested so much in Jake they are not going to cut their losses now. They will most likely ride the contract and not renew.
Unless there is an experienced, journeyman 10 out there, that if signed as cover, could keep the wins rolling whilst QC (Quade Cooper) was injured, there is no point signing anyone else. But because much of the Reds success will sit on QC (Quade Cooper)'s shoulders, no one is going to fill this void.