Great post! Awesome to see an experienced climber's perspective on the new gear.
The only points I would add are that the new Black Diamond screws start much faster than the Grivel 360 screws. Both me and my partners have used the Grivel and new BD screws in Colorado, Wyoming, Canada, Alaska, and South America and found the new BD's consistently start faster and place easier.
I am also still climbing with my leashes on hard (5/6) ice because I've found I can lead the pitches faster with my leashes on than without them. Maybe I'll eventually move over, but I consistently lead faster than my partners who climb leashless. For me, speed=safety.
It's awesome that you're getting back out! Enjoy it!