This was one if the themed gb meets we had a couple of years back The legal view by the lawyer we had at the gb was as follows: 1- the law gives precedence to the relatives of the deceased, even if there is a will to the contrary 2- the relatives can always claim and fight legal battles ( though the birla case subsequent to the meet tilts the balance in favor of a non blood relative) 3- the only sure way of ensuring that your partner gets your property is to will it and publicly disown your family with the adverts in newspapers --- not something one really likes to do :(
The above is from the gb discussion which i remember, though i would also love an easier and better solution Regards Manoj