hi, thank you so much for such an in-depth comment! Stuff like this truly makes my day. A lot of the stuff in the game is intentionally up to interpretation, I don't like implying there's a "wrong" way to read things, but I'll try to answer your questions as best I can.
Community’s gift was something that kind of just came together, actually. The scissors as an item came before the siblings existed as characters (I was in the middle of developing Chapter 2 when I had come up with them as the main "reveal", and I think it shows a little bit). I came to really enjoy the scissors as a symbolism of "cutting free" though, and began to lean into it a lot. It's why Mother has such a strong web/thread association to her (as well as the white Interlude areas). That is to say, I didn’t originally put as much thought into it as it might seem. It was kind of a happy accident. i really love this reading of it though.
As for Regret, the compass pointing away from Mother's confrontation is intentional :-) if I remember correctly, the earlier versions of the game didn't have this, so it was partially added as a hint for one of the endings. But I also wanted it to be a way for some of Regret's desires to shine through. They care for Hope even if they're kind of spiteful about it at times, and I thought having that show through the compass would be a fun detail. I'm really pleased someone made that connection!
Thanks again for playing!