I'm hoping it will not become an industry standard to manually fly when the weather is marginal so that rusty pilots can improve their skills. Practice hand flying by all means but do it on a nice day when you can look out of the window and then relate that view with the internal view, thus reinforcing previously learned skills. This is not being dependent on automation but realising that pilots who are out of practice need to re-establish the relationship they used to have with their skills, why make it so hard for yourself?