typically I dont give much thought to the keybinds due to the assumption that people are playing the game with one hand on their mouse and then their other on their wang, but I'll look into it. Most of your greviences are just the default settings, but that 'Double pressing space brings up the cog menu' issue you had was a bug that got fixed in 0.24 I'm pretty sure.I officially hate the keybindings for this game.
No mouse scroll forward with for scenes.
H and middle mouse click doesn't hide the UI.
Space is suppose to forward the scene, not hide the UI.
Double pressing space brings the cog menu out which is only hidden by manually clicking the cog or once again double pressing space. Also sometime enter does it too. I hate this... Beyond annoying.
Right mouse click doesn't bring the menu out, nor does space. I'm honestly not sure which button brings it out.
Dogma, using the same menu UI recently added a keybind setting, although it doesn't stick.
There isn't a keybind for bringing up the cog menu, you're meant to click it.
I haven't seen other games with a mouse scrol forward bind, but that's interesting, for now i'd reccomend just using the CTRL key for skipping (go into settings and change what can be skipped).