Well, most people seem to immediately like this but some of us still doubt, maybe we just misunderstand the whole idea. I only want to add that I am not arguing against a player's house, only against its location in another plane.
(I am also puzzled that so many people willingly accept the pyramids of teleportation but I said that I wouldn't argue hehe). I think the player’s house is a good achievement of RPGs, it is not only “a place to store all our trifles”, also is an organization system who adds a strategy touch. But if a castle is too common for the Divinity series, imho there are still ways to do that, keeping the immersion:
abandoned town,
ancient ruins,
behind a waterfall,
the top of a mountain,
the underground,
a vault (in context), my favorite is
a sailable ship, and many more options.
But I'm just speculating and Larian's idea could be much better.
