As of now, (shift+)space and (shift+)backspace skip back and forth by the page and pageUp and pageDown skip by the screenfull. I think that both should be possible but I don't care much for the exact shortcuts. I just wanted to weigh in, that if (shift+)space and (shift+)backspace are changed such as to skip by the screenfull, some other shortcut is needed to skip by the page.
As of now, (shift+)space and (shift+)backspace skip back and forth by the page and pageUp and pageDown skip by the screenfull. I think that both should be possible but I don't care much for the exact shortcuts. I just wanted to weigh in, that if (shift+)space and (shift+)backspace are changed such as to skip by the screenfull, some other shortcut is needed to skip by the page.
Regards, Benjamin