A bit of an unusual situation.
My parents will fly to see me, totally 13000 miles each if at 100%, M and V class with TAP. I would not want to lose the miles.
They will fly very rarely and not sure if it will be *A any more, so I want to put the miles into a program which allows me to use them at this level. No status comes into play.
Is there a program that will allow household accounts or easy transfer to combine them in one? Or one with very low redemption rates, possibly cash+miles (Lifemiles comes to mind, but I don't know anything about it).

One thing I thought is to credit the miles to TAM, that will be 12000 points each, which can be transferred to Accor (6000 points each) and then combined to my Avios via Iberia (will get totally 12000 Avios from this). All my miles are with BA, but will like some with *, if I can use them. TAM are devaluing their program, so I would not like the miles to stay there, and I live in Brazil and can get TAM points relatively easily (they are becoming less useful though). 12000 TAM points is a one way domestic award within Brazil.
Another way is to credit to Lifemiles and use them for cash+points if it's still generous.
Any thoughts? I'll have a look at Lifemiles now to see if I get 100% miles and what I can use them for.
Thanks in advance.