Dropdown list of valid label names in smart label definitions.
When entering a label name in a smart label definition, provide a dropdown list of valid label names to choose from. This would prevent typographical errors from creating an invalid definition. For example we have a smart label of "emergency" patches embedded in our deployment jobs which is usually empty. The label name was misspelled for over a year but not caught until we put a patch in the emergency smart label and it didn't go out as expected.

-
Chris commented
I just renamed our labels and then had to fix all our Smart labels whose logic no longer matched our new naming conventions. Dropdowns would fix this! It's funny because Scripts and MIs update to the new names automatically.