FEATURE REQUEST: Improvements for Subassemblies with Values in the Prompt Value Column

When trying to modify subassemblies using the Show Subassembly Prompts interface, if you modify a prompt value that is being used/overwritten in the Prompt Values column your changes will not take effect.

For example, if I have a product, say a Master Designer Cabinet with multiple bays, and after it's drawn and submitted it comes back with some added adjustable shelves in one bay, opening the Subassembly Prompts and making the change there does not change anything because the Prompt Value column is setting the value.

Yes, I understand that I should probably make the change at the L! level and not the S! level, but that's not the point. The point is, as a user, if I need to make a change to a subassembly, I should feel confident that my change is going to stick no matter what interface I use and without having to dig into things to figure out why that change didn't work.

So, a few suggestions on the matter:

A pop-up message alerting you that you are about to make a change to a subassembly that has values in the Prompt Values column. Perhaps with a list of the prompts that are being populated by this column. This would alert the user that they need to be more cautious when working with that subassembly.
The prompts being overwritten by the values in that column should be locked out of editing in the Subassembly Prompts UI.
The Project Level and Product Level save options should be disabled when values are present in that column.

Don't get me wrong. I love the Subassembly Prompt Value column, it's been one of my favorite features to make its way into the spreadsheet. However, for users who modify subs using the Show Subassembly Prompts interface, they should be able to make the change and not have to worry themselves with trying to track down the right location to make the change.