Yes exactly. Or even Kylie Minogue buying it if they sell. (If you watched the comic relief special@IllBredHen I completely understand where you're coming from! I also really like that they're a happy couple without kids.
I am a sucker for an epilogue or flash forward and like the idea of a 'next generation' being able to see the Ghosts, but that could easily be a child of one of Mike's sisters - inheriting the home from their aunt and uncle etc.
I sort of hope they are all sucked off and get their final peace. Then Alison and Mike can sell it guilt free and live their best lives on the money