Thanks for your input! Improving the difficulty curve, alternate font choices, and readability/charting tweaks are all on the table for development going forwards. We hope you have fun with the editor as well (=( ^^ )
Accessibility options are always a plus in my book!
In regards to this I would also reccomend adding colorblind options, a font choice that works well with people that have dyslexia as well as options to turn down some of the more extreme visual effects, so that everyone can have a similar experience. There might be something I have forgot to mention but I think that's all of them.