As another comment just made points out, this is not something the vast majority of Mac users will, or should, be doing. For the rest of us, we're likely to be doing it often enough to remember the shortcut — it's second nature to me now.
The big problem is discoverability, as you imply.
> all possible options ... nothing is hidden from the user
This is the key bit. Showing all possible options would go utterly against the mac ethos.
Not only that, it is begging for people to shoot themselves in the foot (and later call techies to fix their broken computer with no idea what they did).
The big problem is discoverability, as you imply.
> all possible options ... nothing is hidden from the user
This is the key bit. Showing all possible options would go utterly against the mac ethos.