I cycled through a number of distros a few years back on my mini HTPC before finally settling on KDE Neon. The amount of customization with panels and such is insane. I started by trying to recreate the Windows experience (which is dead simple) but soon branched out to having multiple panels, which can be autohidden individually. Settings on the left side of the screen, power options on the right (both set to hide), system tray up top, and the task manager at the bottom.