What does Esther 1:19 mean?

So if it seems right to you, Your Majesty, make an official order and write it into the laws of Persia and Media so it can't be changed: Vashti can never come before you again. And let someone else become queen in her place, someone better than her. Esther 1:19 - Modern Text Bible

(The advisors suggest a permanent legal consequence for Vashti, removing her from the king's presence and replacing her as queen.)