Very nice! I decided to try it out after seeing it trending. There were actually a lot of things that I noticed that probably should not have been seen lol (either because of the game jam time crunch and/or just didn't plan that far ahead for this program).
1. The 'Tool' tab. 2 things I noticed. First was that if you pressed "Widgets", you could pretty much delete almost everything. Second was that if you tried to use the tools listed, it would only work on the background.
2. The 'File' tab. If you pressed "New Deck," it erased the entire program. Similarly, if you pressed "New Card", it makes the screen go blank, but you can go back to it by going back to the 'File' tab and pressing "Cards".
3. The 'Decker' tab. If you pressed "Toolbars", it shows the original toolbars of the program.
4. The 'Card' tab. Pretty much just cycled through the different screens of the program. You could also access the original script too, so that's neat!
5. No brush resizer except for the markers :(
There's probably more, but most of these things probably would've went unnoticed, but I was just being nosy lol.
Here's the little doodle I did though! 