Sure, I'm software developer and this is nearly the same, wanting to modify things so they become perfect. What I can say is even if redoing things could make a big difference, it makes also waste too much time. However, it would be foolish to refrain from making just a few improvements: being happy with what you have done is a blessing that stays in your memory and warms your heart.
The demo 0.5.6 is very well done, for me you don't have to modify anything 😉