The Incredible Hulk TV series was essentially a remake of "The Fugitive" (the TV series from the early 1960ies) in tone and substance, just with 'The Hulk' having to make some obligatory appearance twice an episode on average.
IMO the format worked, but it was hardly 'more sophisticated'. It was really ridiculous HOW they often shoehorned a Hulk appearance into some of the stories at times.
That is true up to a point, but we're talking about where it stands among
superhero shows specifically. At the time it was made, the relevant comparisons would be
Wonder Woman and the short-lived
Spider-Man series, plus the failed
Captain America and
Dr. Strange pilots, and original superhero shows like
The Six Million Dollar Man, The Bionic Woman, The Man from Atlantis, The Gemini Man, etc. All the others were fairly basic, shallow, kid-friendly adventure shows that often pitted their heroes against mad scientists, robots, clones, telekinetics, aliens, or supernatural threats, and tended to be pretty silly.
The Incredible Hulk, by contrast, kept its stories almost entirely grounded in real life and human drama, with virtually no SF/fantasy elements beyond the central gamma-mutation premise (plus a couple of episodes about psychics, a bit of vague Eastern mysticism a couple of times, and a random sentient AI in one episode). And Bill Bixby was a thoughtful, soulful, gentle leading man playing a sensitive and tragic character, a major contrast to the macho womanizer heroes of most contemporary action shows.
You talk about the
Fugitive comparison as a negative, but remember,
The Fugitive was one of the most acclaimed dramas in '60s TV. The very fact that TIH chose to emphasize human drama and emotion
despite being saddled with the formula of a superhero action show was what elevated it above its contemporaries and predecessors. As I said, it proved that a superhero show could operate on the level of adult drama rather than children's TV, just as
Star Trek had proven for science fiction.
I'll tell you now what I decided about the show back in the early '80s while it was in first run: That criticizing it for its formulaic elements was missing the point, because just about
every show at the time was constrained to follow a network- and advertiser-approved formula (which, in the case of superhero shows, usually mandated two appearances per episode). So what made a show noteworthy was how much it managed to achieve within and despite the limitations of its formula, and
The Incredible Hulk achieved far more than other superhero shows of the day even attempted. I was often frustrated myself at the contrived, formulaic Hulk-outs, but the drama around them was good enough to excuse them, and there were quite a few episodes that managed to break the mold.
Anyway, whatever you think of the show's quality, the point is that it's objectively wrong to say it was only a middling success. As I said, a 5-season run was extraordinarily good for a pre-ST:TNG science fiction series.