I've put mine on the shelf for the time being. The nerf to shield blocking makes skills like Aegis Boon/Deflection almost worthless as you're lucky to get more than 1 proc off in the 30 seconds they are up.

GLA can still work just fine, however. Not only do they now have the most HP (MRD had ~270 more pre 1.19) they also have a much larger MP pool over MRD.