> people who prefer mechanical keyboards already have the muscle memory

The problem with that is that every mechanical keyboard is different, so that muscle memory needs a refresh with each new keyboard. More importantly, people who are used to Pi 400 or Pi 500 (non-plus) have a different muscle memory.

> I depend on Delete and Home/End/Page Up/Page Down

For me, Fn-⌫, Fn-←, Fn-→, Fn-↑ and Fn-↓, respectively, do the job. On my keyboard, Fn is the button in the lower left corner, so it's easy to find by feel, ⌫ is in top right corner so it's easy to find by feel, and the negative space above half-height arrows makes it easy to find the arrows too.