Bumper height of vehicles.

Glassware must be rated to survive short drop onto wood floor at a minimum.

(The fitted sheets we have do have tags for top and bottom with hanging tag at bottom. I would say just don't give them hanging tags at all.)

I don't have anything to add, I just want to say this is a phenomenal question, lol.

Early access and beta and alpha terms for games. Also, early access has a time limit.

Alpha - we're adding and removing features.
Beta - we're 90% polishing 10% adding/removing.
Early access - just fixing bugs. Maximum 3 to 6 months.

You can stay in alpha and beta as long as you want. I don't want to change game dev actuality. I just want the terms to reflect what's actually going on.

Grapefruit from the supermarket must always taste of grapefruit.

I would make the written English language 100% phonetic.

I would make SI mandatory in the US.

I would make one night a week a "have dinner with the neighbors" day.

Edit: I would make bidet toilets mandatory. Dry toilets would be phased out like cars without back-up cameras or asbestos insulation.

The THC content of edibles. It's unregulated in NYC so everything seemingly has between 30mg and 1250mg while I'm sitting here with a 10mg hard limit. A few states have a 5mg or 10mg per serving limit and it's wonderful

Emergency brakes should be a handle that pulls a mechanical cable that directly actuates the rear brakes. Simple and reliable, like you would want in an emergency.

Time zones,

No, you can’t just have a half an hour difference!

No more street lights. Nighttime is now dark the way it should be.

Drinking straws are too wide/girthy on average. Every fast food and coffee place uses giant straws, while a relatively skinny straw provides a vastly superior drinking experience, in my view.

Cheating in online video games is criminally punishable