

Highlight->Middle paste has been my friend for decades now. Using it from SunOS in the 90-s to now has been a great feature. It’s the quickest way to copy and paste while I’m working fast with text or data entry.
I love having both clipboards be functional. The latest rounds of tools that have stopped being as compatible with it has been no end of problems in my workflow. I’ll copy with the keyboard, highlight some text and then paste both clipboards somewhere else.
No, using the keyboard here isn’t as fast, don’t bother making that argument, especially since ctrl-c means different things in different places on Unix style systems. Left hand stays home row while the right is forced to leave for the mouse since it’s a GUI.
I’ve had to deal with many tools that don’t respect keyboard cut/paste as well. Add in that some tools like putty or git bash on windows have ctrl-ins for paste?
Panning in CAD/design is usually click and hold middle or even a two button system (freecad), so trying to take a middle click for that isn’t buying uniformity.
The copy/paste world is already fractured enough. Keep the highlight/middle click working so we can go fast. I might be a dinosaur, but I’m a fast dinosaur.






I don’t know every detail of your use cases, but my offline go to is xournal++ (xournalpp).
I use it for many of those actions. We moved to Germany and having a GUI pdf editor for signing, highlighting, redacting, pulling pages, etc has been invaluable.
My wife also uses it for her class lectures. She does math, so she uses a tablet to write on her slides (pdfs) live in class to talk through the material. Then, she saves the lecture PDF to give to students with the notes.