So just out of curiosity today, I tried the crystal combinations for Haven and Spire in the Rime crystal viewer, but sadly they didn't show up.
For the first realMyst, it was completely understandable since Myst Iv hadn't even been made yet, but I don't understand why they didn't add them in here, (unless there's some legal thing that would prevent them from doing it,) as to keep some consistency throughout the franchise.