You scored a bullseye on this one Michel.Also I don't think you would ever have a situation where ALL the remaining players, at the point of the season when you have the auction, would be on the same page and be able to agree on ANYTHING unanomously.
I'm kind of bummed they don't allow players to share or pool their money in the auction. It would certainly make it more entertaining for us viewers.
But if they are firm about that, my pet peeve is they TRULY force every bidder to be on their own. There should be NO coaching or promping from other players who do not have enough left to bid with. If you want to squander almost all your money on disgusting guacamole and a salty margarita with salty chips that will leave you MORE thirsty than before, you should keep your big trap shut and let each player bid and decide on their own. Just my two cents.