Oh well, I don't know to much about bumpmaps, so I thought it wasn't working, thanks for clearing that!
And about the breakable walls thing, I don't know in what conditions those streamers didn't find the breakable walls, but imo, it wasn't that hard to find it, even if they had the same color as the normal ones, since they had cracks on it, I just needed to pay attention to every block I saw. While dong this was kinda boring, I felt rewarded for not having to start everything again. Well, again, I don't know in what conditions those streamers didn't find the breakable walls, but maybe the lack of knowledge of such "mechanic" being present in this mod, was one of the reasons they didn't find it, well, Idk and I may be wrong. Maybe a solution for this would be making those blocks less darker, so they aren't that obvious but something that is different from the normal blocks (I know the breakable walls had cracks before, but a different color tone takes your attention more than cracks). Well, I only find the grand cross block only in the 1st level, even when playing 1.3 (even though I only went to level 4 so far), I don't know if the other ones are like these, but hardly someone's going to look at the ceiling and find that Level 1's Grand Cross, I'm not saying it's too hard to find, (because well, they should since they kill every enemy in the room) I'm trying to say that, at least in the Grand Cross example, not adding bumpmaps won't change anything (at least for me in the levels 1-3, since I don't know if other people could find those easier than me).
Plus, I know this kinda doesn't apply to this subject, but since I've already done a post: Simon and Richter in Smash are really cool, right?