The Old Guild Wall also doesn't have an old guild's wall in it- I decided against making the boss area an actual peninsula since it would be awkward having another very open and watery boss room. It's not because I don't understand what one is, you're just meant to use your imagination a bit when it comes to these things
My art on the main menu is just the original png, I add some noise to my pixelart because I like the graininess of it. I think you're trying to say I should add the noise/graininess to all the portrait backgrounds because you noticed the colors don't share that filter? It would be a lot of work the way I have it done and I don't think it adds anything substantial. I personally think the simple flat backgrounds make the characters pop much more because it lacks that filter. Regardless, I'd rather focus on pressing issues with the game like bugs and future content/community things instead of spending my day(s) adding a tiny filter to the assets when it isn't a problem lol, hope you understand.