Also, Apple definitely had the nubbins correct (D and K) and foolishly surrendered that as well: they're easier to notice when they're under the wrong fingers. With them on F and J, if your hand is offset towards the outside you're forced to notice the absence of the nubs.
Oh well, just like caps lock can be remapped, so can my keycaps be swapped (perks of blank keyboards I guess), though it'd be even harder to use a keyboard that's not mine I guess.
In terms of ergonomics, the curled-left-thumb "Command" activation (it's where Alt is on a normal keyboard) is my favorite thing about the Mac key layout.
Sometimes it's pinky on the CTRL and index on AZXCV ie the hand lower/closer to me.
Sometimes it's pushing CTRL with an edge of the hand and with the fingers on the ASDF to press AFRCVB.
Sometimes it's my hand on ESDF with run around in Zandronum and pushing CTRL with an edge of the hand to invoke 'invuseall'.
The main driver for moving SHIFT to CAPSLOCK is what SHIFT is used way more common than CTRL and with my big hands it gets quite uncomfortable for my pinky to used too much in an awkward shrimp mode.
NB on a non-laptop keyboards I flip both Windows/Super keycaps upside-down, helps a bit.