I was fine with a bed and enough room for a few chests, but lots of people in Divine Divinity arranged furniture, looted thrones or a piano, etc, to bring to their home base, spread gems out as lighting at night, and put a lot of time and effort into making some place their own.
It may be interesting seeing how things you do in Original Sin effect your homestead, though. You could make upgrades to the battle tower platforms in Divinity 2, but they were relatively minor in appearance, and not exactly huge in effect.
