A simple solution (IMV) is that all application documents for ID should include the questions -
What is your biological sex M or F
What is your Gender Identity M or F ( the non binarians have to answer one or the other).
Repeal the GRA or amend it to revoke the ability to change gender on driving licences and any other ID document with or without a GRC.
As you can see, I am just swiftly scribbling this down, I haven't thought it through at all. It's just my instinctive thoughts, that I'm sure will be scuppered by something or other.
A reluctance to repeal/amend the GRA being one of them I'm guessing!