Interesting thread. I must admit - I like the looks of higher screens on scooters and I got very exited when I discovered hidden mounting brackets for screens on my Agility. I always found higher screens on my precious motorcycles very helpful.
But since I got hold of the scooter I only use it for commuting at lower speed, and here's the thing - I really, really enjoy feeling the wind on the scooter. Riding on a small scooter without a high screen in our climate really brought new joy to my daily riding experience.
There might be a solution though - having a smallish scooter without any screen for daily commuting, and at the same time - having a bigger scooter with higher screen for longer trips.
So for the time being - I'm as happy as a small fish in a very big ocean without any screen on the scoot.