My tangential gripe is that designers, GMs and players try to treat game rules like lawyers treat legal codes and documents .
1) Game rules aren’t written like legal codes.
2) (most) Gamers aren’t lawyers
3) Even trained legislators, judges & lawyers screw this stuff up- often because of “legalese”
My Wills & Estates professor, Stanley Johanson, emphasized using clear and concise language when drafting so that everyone involved was crystal clear on the rights and duties. He espoused prevention was better than cures, and felt that if your clients wound up in court, you probably had a flaw in the documents you drafted for them.
Same goes for game rules. Be clear & concise in your writing and word choices, and you’ll have more fun PLAYING your games than bickering about what paragraph 5 on pg 125 meant.