Just buy this

At some point, the populace felt keyboard shortcuts were enough and they have everything else they need on a keyboard. It's the standard, other keyboard designs didn't really quite take off, and most people can barely use a full-sized keyboard anyway.

Some people prefer smaller keyboards, and are willing (and wanting) to have more shortcuts and function layers for ergonomic and desk space reasons.

(If you use a 40% or smaller keyboard, you're weird, and I love/hate you.)

Some other people use so many shortcuts that it becomes so infeasible to remember or press them all, so they get macro pads, or even entire additional keyboards to function as macro pads.

I think that everyone who really wants that will spend a half an hour learning how to remap keys.

One of my computers has a clipboard key that's for pasting.

Except I'm totally used to ctrl-C ctrl-V, so I never use it.

I can see the benefit, although personally I'm too attuned to ctrl+c,v,z,x

A key I'd really like to see on computer keyboards is a shift key that behaves the same as on a phone, toggling between lowercase, Title Case, and UPPERCASE.

It'd be so useful to be able to select text you've already typed and change the format. Phones have done it for years, why not computers? Could be a much better use for the Caps Lock key.

Back in the day there were 12 more keys that could be bound to that but they decided to get rid of them.

Logitech G910 has a bunch of extra keys that you can create macros for and on mine I've got three of them set just for that

Mm, I wouldn't hate it. It could take the place of the scroll lock and pause break buttons on my keyboard, two keys i've literally never used.

It's true they would probably be more useful to the average keyboard user than say the scroll lock key, or the fucking copilot key. But to be really useful, they would have to be easily accessible without moving you bands, or else it'd just be faster to use a shortcut. Keyboards with macro keys do exist so maybe get one and map them to CTRL+C/V

Do them 100000 times and see how comfortable they feel

My keyboard has a column of configurable macro keys. My last one had two columns. I use them soooo much I have literally never bothered to figure out how to set them up on this one.

I've seen a few that do that, actually. Like a media keyboard with buttons for music controls, there are some that have additional functions like copy, paste, cut, double space, double enter, etc.