Any ideas for sliding glass closet doors, other than replace them
You could cover them with an adhesive film or paint them.
Maybe you could do something like this to make the glass look more up to date! https://www.hometalk.com/24868152/diy-privacy-for-your-windows
Love them, plus they are exspensive, what's to update
I agree with the other comment about using clear contact paper. We have a French door with glass panels that we used it on to add some privacy, and it works great. It shouldn't harm your mirror if you ever decide to remove it in the future.