I appear to have softlocked myself shortly after being introduced to ghost, as I replaced the ghost with air-walk and I hit the save point, thus preventing me from simply dying to respawn up above!
Another, more minor issue, is that you can't tell the game to ignore your controller, or adjust the glyphs (but that's fairly minor, as most games won't let you switch the glyphs if you're using dualshock controllers)
I'm very much appreciating this though, and am eager for the end of october!