There should at least be a code of professional conduct where authors state the extent to which LLMs were used. (This would also help not wasting time by asking some “authors” about “their” paper.)

Journals themselves should make policies about the extent to which they allow the use of LLMs. In some areas it might be considered more benign than in others.

There is. NLP conferences, like the ACL family (and the ARR) require you to disclose in the paper if you used LLMs for writing and coding, which ones and how. Whether every author is honest is a different matter.

Not sure if you're just talking about past design, but currently you can use arrow keys and enter in the menubar, tapping first letter of options to hops there, and can activate menubar with a keyboard shortcut of your choosing. You can also hop directly to help, start typing and get matches to select, all without a mouse.

Yes! I did this and love it. My layouts are heavily customized so no standard painted keycaps would do me any good anyway. I use a coherent set of key colors on various layers to provide reminders of what various key clusters are about. Looks great too.