At the end of the day, the 5e design is heavily tilted towards SAD-ness. The MADdest classes, such as the Monk, aren’t even that mad, requiring only two stats (Dex, Wis). In 3e, a Monk required those + Strength. Of course, no matter the edition, everyone needs Con so I’m not counting that.
Anyway, what I’m getting at is that we may love or hate SAD-ness, but it is nonetheless a core design principle of the current edition. I personally think SAD-ness makes 5e a bit boring and that MAD-ness would spice things up a bit. But even though I think so, it’s hard to buck that trend just one houserule at a time. If we say Rangers get to swap their FS for Shillelagh + one more cantrip, but Fighters cannot swap theirs for True Strike, I don’t think we’re being very congruent…