Current shortcut is ctrl+shift+F. F11 is bit more common except libre office: - gimp - inskcape - digicam - rawtherapee - firefox This would allow to free ctrl+shift+F and use it for something like "filters", as F11 seems not to be assigned to anything (correct me if I'm wrong).
It is really easy to do that, but I'm kinda wary of changing default shortcuts at this point.
Okay, I looked into this, and this isn't going to change by default: the KDE default is ctrl-shift-f, and I don't want to move away from that without very good reasons..