If I understand you correctly, you have 3 separate suggestions here:
Give the ability to hide the text. This already exists - right click and uncheck Visible items>>Error Explanation Text.
Add an error in input to the ring. I'm assuming you're suggesting that if there's an error in, the ring will output that instead of its own error. I don't think that's relevant, really, because the ring is basically supposed to act as a constant and constants aren't modified by inputs.
If the description is hidden, show it in a tip strip when hovering. I'd buy that, but I think it needs to be a separate idea.
> If the description is hidden, show it in a tip strip when hovering. I'd buy that, but I think it needs to be a separate idea.
In fact I just saw that the information appear in the context Help, so there is no need to add this feature
And don't forget you can "Explain Error" to get the detailed discription of the error code. A menu shortcut for Explain error helps for this. (I use ctrl+!)