As an aside, I’ve really come around on roll under mechanics. They just work without needing to set DCs/TNs and other fiddly stuff on my end. I wasn’t a fan for a long time, but I’ve really begun to dig it for simplicity. Something about the character setting their own TN is magic at the table.

I’ve tried to keep it mechanically simple and have as little math beyond simple addition and subtraction as possible.

My kids can count up to 20ish and only do single digit addition and subtraction.

So a basic roll under system to work on comparing and contrasting numbers.

That’s not to say that I don’t love rolling my math rocks. I do!

But it’s hard to beat the ubiquitous nature of the unassuming six-sided die.

You know, I've sat on this. I think you're spot on. It's some people's accessible introduction to OSR-style games.

I'm not the target audience. But with that in mind, I think it's a fine product. I suppose I was expecting more uniqueness or innovation from it, but that's on me.

What am I missing? Did I overlook something?