Gnome doesn't have menu accelerators in the window menu though, so "alt-spc n" does nothing: the alt-spc brings up the window menu, but the n doesn't activate "minimize". This interaction not functioning in Gnome keeps me off Gnome entirely.
super+h minimises. pretty sure you can make it anything you want.
if you're looking specifically for "alt-spc n" to minimise I'm sure you can find a way to make that work - but why? to retain muscle memory between windows and gnome?
