Fanaelialae
Legend
It doesn't require perfect parity.So here is my issue. Part of these posts are that the fighter doesn't get "shenanigans" in out of combat areas the way casters do. Likewise, three l they don't get enough "high level" abilities to keep them on par.
Ok. Let's pretend that a fighter and a wizard who only uses blasting magic are equal at the end of the day. (Big assumption, but let's pretend). The fighter is the equal of the mage in damage per second when averaged.
What high level ability does the fighter get that matches Time Stop? Teleport? Feeblemind? Wish? How do they get up to the creative use of Permanent Image? Dominate Monster? Mordy's Mansion? Foresight? Etherealness? If you include divine magic, what is a fighter doing comparable to Earthquake or Word of Recall or Regeneration?
Ok, maybe it's not fair to compare martial ability to 6th+ level magic. That is supposed to be rare even for casters. Let's go 5th and under. Let's cede the ground of high level shenanigans to casters who only get 1-4 per day.
What does the fighter get that matches scrying? Greater Invisibility? Geas? Stoneshape? Locate Creature? Tongues? Fly? Remove Curse? Pass without Trace? Misty Step? False Life? Fog Cloud? Mage Hand? Prestidigitation? When do they get them? Can a 11th level fighter match a 1st level wizard in shenanigans?
I'm genuinely curious, once combat is ignored, how much "reality shaping" ability a mundane fighter should have. Because I cannot fathom a game where a high level warrior can use an ability they rivals a high (or even medium) level spell when it comes to shenanigans.
Let's say that on a D&D scale of 1-10, a 20th level fighter is a 10 in combat, 3 in exploration, and 2 in social. Whereas the wizard is an 8 in combat, 9 in exploration, and 6 in social.
Note that these numbers are open to debate, but are exclusively based on class features (no backgrounds, magic items, or anything else that's available to all classes).
Unless you think those estimations are off by a very large degree, it's clear that the fighter's exploration and social potential could easily be bumped up by at least a point or two without even coming close to stepping on the wizard's toes. It's purely a quality of life improvement for fighters, to give them improved mechanical agency with respect to the pillars where they have very little (particularly when compared to the wizard).