That's the trade off. You have to decide whether or not it's worth it. But if you never do it, then you end up a with a system where nothing means what it say

That's the trade off. You have to decide whether or not it's worth it. But if you never do it, then you end up a with a system where nothing means what it says and that's awful. I feel the best time to rename something is as early in the development process as possible. Because the longer something is wrong the more entrenched it becomes.