Restore the game to before I used them all, get through the first five stages, and then go back to experimenting on stage six.

Final boss fights are for experimentation. "Well, I don't think I'll need these five thousand items, what does this do?"

Overall, JSON5 (having comments and end-of-line commas is a big reason I got into YAML).

I suffer with YAML, but use it pretty heavily. It also has the * and & operators which I use fairly heavily, and it fits well with the Markdown + YAML I use, but I hate that whitespace indenting with a passion.

Occasionally, I look at Nickle (https://github.com/tweag/nickel) and KDL (https://kdl.dev/) and I get really tempted, just haven't made that jump.

I'd rather see it because then folks can set up word filters to get rid of it. Adding random characters in the middle means it is harder to avoid seeing because it is so obvious what the word means.