No, no, no!
You apparently don't get the point: most features are superfluous, no matter how good or bad you are.
That, because of the very small number of technical parameters that really are involved, and because of the simplicity of the decisions we have to make about how to use these very few parameters.
Those millions of devilishly convoluted auto-modes may suggest to the novice that using a camera is so hellishly complicated that even a 400 page manual can only cover the very basic basics, yes.
But it quite simply is not so.
A lot of features started out, not as unmissable tools, but as conveniences.
They have grown out of proportion, have become a let's-overwhelm-the-ignorant-into-spending-too-much-money marketing thing.
Some of these features still are convenient. But most are way too complicated to be that, unless you are willing to surrender control to the computer 100%, without having a clue of what is going on or what it will be doing and why.
But photographers don't need to be just someone who came along for the ride. Photography really is that darned simple that noone (note: noone) needs all that stuff that is filling multiple thick tomes that are still called User Manuals, which properly would be called "incomprehensible sacred texts designed to baffle the initiate, keeping him as clueless after reading all 2,586 pages as he was before", let alone cameras that have all those thingies these pages are supposed to guide us though.
But what do you expect from camera makers? That they say "here's a camera and lens that allow you to set shutterspeed, aperture and focus, just like all the ones made by my competitors"?
If you want to rewrite the thread's premise, it should perhaps read something like "which of the many useless features do you use? Sometimes? Accidentally?"