Tony Vargas
Legend
No, because there was never any reason to have the Thief.Or it shifts the issue to the rogue. If the fighter gets expertise like the rogue is there even really a reason to have the rogue?
Pretty obviously, no.It might help to start at an extreme. Suppose a fighter auto succeeded on every skill check he ever attempts. Would that actually be enough to bring him up to a wizard or even surpassing a wizard?
Remember, that in the 5e Play Loop, the DM determines uncertainty, then narrates success, failure, or calls for a check.
Your proposed variation - which we might call "Cut an honest Fight'n Man a break, will ya?" I mean, if it was the 30s - would, in essence, remove that last option, so all the fighters actions would result in narrated success or failure.