I see this idea as bit of a double edge sword. On positive it would help the government because there won't be as much pressure on the budget to pay for as many pensions. On the negative it will increase the divide between the rich and poor.On pensions, asset tests and the family home:
I think if you don't include the family home, you are letting people have their cake and eat it too.
Include it. If the residents still need a pension, then give it to them but have it (or a portion) deducted from their estate.
There are too many exceptions and loopholes in law that basically do nothing but funnel everyone's spare cent and lock it up in the unproductive asset that is existing housing. It inflates prices beyond worth, and stifles the economy by denying investment of capital in wealth creating pursuits.