Feel really bad criticising them because I love the cast/writers and the programme but agree with PPs...this was not the ending we all wanted.
I think Julian's investments/gambling paying off would have been a good one allowing them to buy the house off the posho neighbour with the drunk wife and the Labradors then living there whilst leasing Button House out as a hotel.
Alison could live in day-to-day peace but visit them over the garden hedge daily or go onto he hotel grounds whenever. Their kids could grow up playing with the ghosts but also have a normal home life. They'd be rich and happy but still have learned all the lessons about being helpful, patient and humble.
But it's not my story to finish!