Wow. Two typos in seven words. Impressive.

Don't ask means have quarks in them.

I think 13th Age did a better job of the language, although maybe that was mostly because it has fewer complex cases needed adjudication.

Like mostly just the GM? Even in trad or OSR games with a strong GM role, the GM should only be taking at most 50% of the attention.

Honestly the "supposed negotiation we believe is happening" is I think most of any RPG. We are just making shit up and through collaboration and compromise we manage to bring everyone's input into one shared fiction.

Honestly I then that might be the best option. I don't think you can codify what makes Discworld into mechanics.

Ah, the start of Charlie's path to lichdom.

Did you get to the bit where if anyone tries to look for someone who is hiding they become Blinded?

Have you tried to figure out how hiding works?

I don't think the system will drag like opposed rolls often can because there's no maths. It's actually a little less detailed than you state too because the players never get a d8, the GM can give them d4, d6, d10 or d12 to then roll against their d8.