I regret “upgrading” (if you want to call it that) to Win 10. I got tired of the nag screens and took the plunge, to my regret. I found the Edge browser to be a total piece of crap. After being a dedicated user of Windows Internet Explorer it was the Edge browser that finally got me to download Firefox and switch to it completely.
Windows 10 gives you the option to continue using Explorer instead of Edge, which I have done. I completely agree with your assessment of Edge, however.
#5 Get the addon’s called Classic Theme Restorer and Flashblock and Adblock Plus and I use this one called NewScrollbars to change the scrollbar color to make it easier to see.