I am unintentionally rereading some things these days, but no serious regrets here. The House Beyond Your Sky is a very good exercise in far-future, or just far-speculative, fiction. The entities span worlds, and possibly soon universes. Matthias is creating that new universe, but he maintains his human connection.
It's fun to read through the inventiveness here, that got it a Hugo nomination for best short story in 2007. I enjoyed it both times, and may remember it better now. Enjoy it for yourself.