Wow, thank you so much for the feedback! Those are some really great tips, and I'll definitely want to look into them further in the near future. Regarding the last part of your post, I think most of the issues we had with the level design itself wasn't necessarily because of too many variables, although that could be a factor, but rather just a very short testing stage. We didn't give ourselves enough time to test to make sure everything worked as intended when it was exported, and as a result some of the levels in the actual game were a little unpredictable. That should be fixed after the jam is done.
That's funny you mentioned the font; we were going to change it out but didn't have any fonts downloaded other than Unity's default ones, so we used Ariel, one of the most common word document fonts :) Using symbols is a good idea we hadn't thought about, though. We might have to try that.
Thanks again for the great feedback! It's really appreciated.