OT - houses etc

There is no harm in putting the house (assuming there is no mortgage or liens against it) in the parent and Brian`s name. The only issue would be to make sure they keep a good HO insurance policy in place and stay current on taxes. In the end (parents passing) it will save some issues. If they can afford it why not one of the adult communities? Forks Township?
I would not be on any loan but I would be one of the insured on the HO policy.

Pam, don't freak out, this dream of theirs isn't gonna play out.  No offense, but with the economy the way it is unless you are sitting on a pile of "down" money and have a perfect credit score, neither of which you have, a single woman (and you would be a single woman in the eyes of a bank/mortgage company as hubby doesn't work) and say you make less than 75k, you won't get a loan right now for a mortgage on a house unless it costs less than $125k.   Hubby can't sign on something WITH the parents because he has no income.  They can buy it outright totally and leave it to him by deed but to put him on a mortgage with them they would investigate his income and ability to takeover should one or both of them die, and he doesn't have that so it would never get approved by the lender. 

No doubt that as they get older and they see he'll be a stay at home Dad they are thinking they'll be a benefit as babysitters being close to the grandkids and he'll be of benefit taking care of their property which you'll eventually inherit.   If you can deal with that scenario, as many people do and can (they might have less toxic in-laws) then it works out well; if not, let the long arm of the (real estate) law handle this. 

Only YOU can sign with them, and you don't want to.  SO, end of that story.   Sleep well tonight, you have no worries.  hahahaha  

"And their next brilliant idea....to buy the house outright w/ inheritance money if they find a cheap enough place, but put it in Brians name.  And/or have us co sign for a mortgage on a house with them."

Somehow I`m missing something. If they buy it outright there is no mortgage to sign. 
If they are going to mortgage the property and you have a goal of buying a house then being a cosigner is a liability and not what you want to do.

PS: I know a bunch of house flippers and they don`t buy outright. They use all kinds of loans, mortgages and leverage BUT they have the financial ability to carry the loans if the property don`t sell quickly. Hits really high risk.

Why don't you encourage them to "rent first" and see if they like the area, and put them into a place that they'll never want to leave.