Who cares if it's ready for a come back? The name you choose doesn't have to be a zeitgeist-y one. In fact, there's a school of thought which says thse names should be actively avoided if you don't want your name to date badly. 
At least no-one will be abe to pin-point a Gladys to the noughties and teenies like Ruby, Millie, Evie, Ava, Daisy, et al.
Personally, I prefer Louise/a, but just making the point.