Serenity is an amazing accomplishment. It’s odd to me though because I always hated the windows interface, even 3.11. It seems a lot of modern Linux desktops (I know serenity isn’t Linux) try to emulate the feel of modern windows but it ends up looking like a meh version of an already bad interface imo. I still prefer the look of enlightenment or motif+4dwm.

The classic Unix interface that always seemed nicest to me was Sun's OpenLook.