Just wanted to show you something really quickly. I know it seems like too much of a pain to switch to low res now, but,I mean....
This is a picture of Room#1 in my training game from 2 years ago:

And this is the re-make of it I'm currently kicking around the idea of making into a full game:

So...I dunno. I know your game isn't nearly the extreme like this is, but I really think the switch would help.