Currenly you use Ctrl+Space for make window a fullscreen
Want to suggest Shift+Ctrl+Space to close (or minimize) active window (ye, i know that me as user may learn all F5-F10 screen loyaouts - but it is harder, than just select active window and press Shift+Ctrl+Space
on laptop to use F5-F10 stuff i also need press Fnction button - not comfortable
in that context idea to configure own shortcuts looks also nice, eheh