"I say to-mar-to, you say to-may-to, let's call the whole thing off."
NO! That's a stupid idea! It makes things even more confusing!
Whether you say to-mar-to or to-may-to, people are generally going to understand what you mean.
But if you're in your local BURGER BAR, and you ask for some "off ketchup", you're probably going to end up with FOOD POISONING!
So let's just stick with the existing nomenclature, shall we?