Touch Screens have issues !
In my view .....Touch Screens are OK on had held phones and iPads. Anyone considering a touch screen from Apple on their computer monitors hopefully will only wonder why it did not happen.
The answer is simple, extending your arm out over time is a body killer, very uncomfortable. Even Microsofts touch screen along with Win 8 has many limitations and unhappy results. You can’t do everything needed on the touchscreen without the keyboard functions and mouse. Example trying to highlight text, copy it, and move it .....if the finger looses contact with the screen.... boom what you were working with just might get lost and be dropped someplace where it’s hard to relocate and start over.
I hope Apple keeps their cool and NEVER follows the Touch Screen computer trends of MS and a touch screen which is an ergonomic disaster on the arms, wrist, and shoulder areas of the human body, and it will not eliminate the need for a keyboard.
I love my iMac just the way it is, if it’s not broken, don’t try to fix it. If the OP has a fixation for the Touch Screens, it’s just wanting to be a part of the latest zoom. It’s the Band Wagon Approach ..........
Choctaw