How about a Fix for SharePoint 2013 installer.
Come on, guys. This just won't do:
Attempting to install any variety of SharePoint 2013 on a machine that has the .NET Framework 4.6.1 on it fails because the SharePoint installer says that it can't find .NET Framework 4.5.
The prerequisite installer happily accepts 4.6.1 (as it should), but the product installer makes a newbie mistake in wanting "4.5" but not "4.5 or later".
Trying to downgrade 4.6.1 is a nightmare because it's inexcusably poorly documented (Aaron Stebner's blog post at https://blogs.msdn.microsoft.com/astebner/2016/03/04/mailbag-how-to-revert-to-older-versions-of-the-net-framework-4-family/#comment-37506) gives the only clear idea of what you have to do - uninstall a KB.
Guys, if you take any pride in your work, fix this please.