My biggest complaint about a keyboard is where the CTRL keys are…
I ‘grew-up’ with the CTRL key where the modern day CAPSLOCK is.
Luckily I can remap that in X11 via .xmodmap, or skip that entirely in windows by mapping it in the registry.
Travel greatly affects my happiness with a keyboard, as does the feedback. I never understood how folks could love the collapsable spring keyboards… I’ve always been a collapsible rubber dome kinda-guy.