-I will be pretty honest, I choose that background because it looked cool. I had to look out online to understand what you meant. Now that I saw what a biblically accurate Throne looks like, I'm not sure what to think about it. If anything it can be a pun about the main character's default name (Angel).
-To prevent the player from immediately going back to the previous room due to the new being flipped 180°, the next update will include a direction-lock to the exit for like 30 frame preventing the player from immediately going back by mistake, like you suggested.
-Your RNG was clearly not good, but I think everyone will agree the game isn't easy especially early game. I already made a few changes to help out the early game (for example, there is now an extra minor gem in the Upper landing and a guaranteed gold coin the first time you enter the Mystical elevator). I may do more if necessary. An idea I got from the streams was to give each outfit a passive effect (like the grey dress will tell you how much loot there is in a room like if you had a compass, or the starting one will give you a very small bump to your loot chance).
-The palindromes books and the note you found are useful clues, but they do not suffice by themselves to solve their respective safes. More info is needed.
-Like in Blue prince, you cannot pick up any clue with you, it is intended that you take notes or screenshot any valuable clue (the game even now has a build-in screen capture shortcut to make the process easier) and once you got all music scores, you deduce the code. I have not seen anyone solve that puzzle yet (mainly because the 7th music score is in an uncommon basement room), but once I get some feedback on that, I may change the starting clue. It seemed like the memo with music notes was confusing people more than helping them.
I will happily follow a more complete playthrough, even if it starts at 2 AM in my time zone. 🧚