Another suggestion: How about adding a "miscellaneous settings" tab to the options? Here you could add things like "looping enabled" or "turn off split bar" (see screenshot, I always click this thing accidently) and a lot of other things, maybe settings you use to store in the "SVar" registry.
I also would like to have a special feature for the GPU video processor settings: "CPU only for rendering, graphic card for building preview". Reason: My (old) graphic cards don't really work for exporting the video (flickering etc.), so I have to switch to "CPY only" for that. That means I always have to switch it back to a graphic card when editing the video, because CPU only is too slow for that.