I don't know if it's "needed," but arrow keys could be useful as I did try it to try to fix the screen lol. I think it sounds like an either / or thing, in case you need the arrow keys for something else someday.
Ahhh I see, I was curious about the stone road having a benefit. I wasn't sure if it was a random glitch or not ^^;
I think the wisp thing I sort of wished I knew before, because it lead to a lot more failures and even just skipping the puzzle as I felt it was unsolvable for me. I only discovered it was possible when I saw the human NPCs move and it triggered the wisp movement in a later puzzle. We can stop on the stone circle tile, but it doesn't activate the chest box, so it made me assume it was broken, so I just sent Ron home and assumed I did something wrong.
Sure I'll follow the game then (: good luck with the updates!