I have nothing interesting to add, except that I literally just stood up from reading House of Leaves in bed before sleep.
Btw, have you heard of the book Ship of Theseus? I bought it for my wife and we haven't jumped into it yet but seems similar in that it's a big puzzle: https://www.amazon.com/Ship-Theseus-J-Abrams/dp/0316201642 (and JJ Abrams if you're a fan)
It really is a terrific book.
the nonlinear aspect of it all is wonderful.