Yeah, I feel like Gibson did all that and then some, whether it was in the original film, or as the savior of the children sacrificing himself for their future in Thunderdome.
I actually thought they gave Max less to do in Fury Road, as they were focused so much on Furiosa, which for me was a better choice anyway because it didn't feel like Hardy, or Miller for that matter, had much to add to the Max character at this point and Theron is simply a better actor than Hardy, by a fair margin. I didn't see FR as a "soft reboot" so much a passing of the torch to a new character with Hardy there more as stand-in for Gibson while Theron shined. I feel like this was corroborated by Miller saying the next film in the franchise would be a Furiosa movie.
And I'm not saying Gibson was a good Max in the original trilogy, I'm saying he made Max Rockatansky and it was never going to be another actor's role, and Hardy is the proof in the pudding. He's a good actor. I don't know that he's a great one but he's good. But as far as a whole series of Max movies with him in the title role, well, I just can't see that being a big draw without someone like Furiosa or Immortan Joe to help him carry the film.
While I think I've expressed some form of this opinion before, I'll reiterate that I feel
the Mad Max series hasn't always known what to do with Max, depending on the film; in retrospect, the original serves as a pretty good, accidental "origin story" for a character that didn't even exist before it, but
The Road Warrior ended up rushing or underplaying his redemption arc in that particular entry, with no real big "My name is Max"-level moment, so while
Warrior is still a great film on the whole, it's more to do with the stuff not having to do with Max's arc (or lack thereof, as I would put it). That leaves the Max in
Thunderdome without much of anywhere left to go with his arc, which was mostly already finished by that point anyway (plus, it's the weakest entry in the series anyway), and I think Miller realized that, and why he wanted a do-over with
Fury Road, not just with the recasting of Max, but also the resetting of his arc back to where it was at the beginning of
Warrior (but even more anti-social and animalistic this time), so he could finally give the character that big redemption arc that he was always missing, as far as I'm concerned.