uhhhh ok, actually I was able to do this with JPEXS super easy, just edited and replaced one of the pngs. I'll see if I can mess with the code a bit too, (prolly won't have time to get to it today)
Edit: ok nevermind I did have a second and it didn't take long. I was able to tweak the code just a bit just to confirm it's possible, just changed the text on the menu in the bottom right of the hub screen: Seems like tweaking the code is totally possible with JPEXS but I guess I'll see how finnicky it gets with more significant changes