DH & I have very different arrangements on the bed & we don't want them moved. He sleeps with an electric blanket and 3 stacked pillows. I sleep with pillows on each side of me + head pillow and often throw off the covers. The dog sleeps wherever she chooses, usually snuggled against my legs. I'm very aware of the weight and try not to disturb her-then she starts disturbing DH, the dog needs a trip outside, the whole bed re-arranges, probably one of us uses the restroom, gets a midnight kitchen run and finally things settle down. Don't need extras in this mix.
Also, I often take naps. Minimalist works.
As to decorating: start with paint, then window treatments, cleaning out DH's desk (which I'm not allowed to touch).... Stop right there. Too much.
Although I can see a bedtime routine becoming restful.