People were pissed 18 years ago when the Office ribbon was implemented because it broke their workflow. MS might have gussied it up now, but they haven’t dared to reinvent it since.
Wow, now I feel old more than any "movie X was released Y years ago" factoid could make me feel.
I do realize that there are probably no ideal UIs for accessing such a breadth of options, and it was a valid attempt, but not really successful, imo. With some adjustment and practice by users, I believe something like Alfred within the app, with smart search and suggestions, would be a quicker and more efficient approach for tool activation. Since there has to be also a good way to discover features without explicitly searching for them, maybe something like the Start menu is the right approach - quick search, but also categories and lists of tools.
Sounds like Google Docs.
The ribbon is also entirely keyboard-drivable and fast that way. I’ve seen the data on why it was introduced; it was a scaling issue- the old toolbars simply could no longer fit all the functionality in apps like Excel, so they made them context-aware.