Skipping the splash screen is what -menu should probably do. I think it was simply easier to convince the game to go to the splash screen instead of the root menu directly, but at some point it'll be possible to change that.

Your description of -background sounds identical to -minimize.

I have no idea what the use case for -noexec would be. At minimum, you'd only get compile-time errors like this, no runtime errors. But even so, what would be the point?