What about Kilmer? Are you another person who just considered him "forgettable"? I think he's underrated.
I re-watched a bunch of 60s
"Batman" last summer and I agree that West was the one thing we could rely on to be great in any episode. I used to have the same attitude that it's just dumb trash which does a disservice to the Batman mythos, but now that I'm older I can respect it as a different interpretation with as much merit as the more serious takes.
That being said, it does have certain flaws that shouldn't be dismissed under the defense that 'anything goes because it's supposed to be campy'. As has been mentioned, Gordon and O'Hara are quite useless as law enforcers, completely dependent on Batman, and that gets tiresome after awhile. I also think Burt Ward was often maddeningly grating in his role (aside from his "Holy..." quips, which were always funny), but I sympathize with the guy being as young and inexperienced as he was.
I really don't like the show's version of The Joker now too. I find him very dull and repetitive, especially compared to The Riddler, Catwoman, and Egghead, who had much more imaginative schemes, were better written, and were played with oodles more charisma.
To get this a bit more on-topic, West's performance deserves a lot of respect for being one of the few things on the show that always worked and was always engaging. Not all of the performances were always as polished and consistent as his, which may be hard to recognize by some since he played such a preposterous character.