Very impressive effort. He mentions so many cool ideas. I really like the drop-down with what you want on the toolbar. Good way to unclutter the settings menu.

I wonder what would be a good way to visualize settings the user changed (and changed back) and some way to see the defaults. Perhaps save custom settings? Useful but it adds even more cans of worms.

Say, after I change the minimum font size on my browser, is it still usable for webdesign?

What if I want to configure Audacity for podcasts and for music?

I wondered if one could ask the user when they started using an application but it seems unworkable.

Then had a silly idea to do a slider that moves the ui in time with animations so that you can see buttons fly in and out of sub menus. Slide it a few decades to the left and you are back in windows NT. Not a realistic thing for MS to make but depending on the project it might be cool.

Then had an idea for a tree shaped slider with all the ui branches in it.

For websites I often keep the old designs on the server and append a date to the file name. Never had a reason to expose the user to those but it could be fun. I did lots of crazy experiments that didn't live up to expectation.

Can in stead throw designs in there that appeal to single digit % users. And then they won't be able to find it.

Maybe some day AI can save us.