I think its a tad harsh to say that Lazenby "killed" the franchise. I mean, he only starred in the one movie {that's not enough time to murder a franchise!} - and whatever you may think about OHMSS, there's no denying that it was at the very least a courageous {if misguided} attempt to make JB more "real" ...
And what baffles me is that if you didn't like Lazenby's attempt to make JB serious, then why didn't you like Moore's attempt to make him more fun?
I also happen to like Dalton. Personally, I felt Moore OD'd a bit on the tongue in cheek humour, and that Dalton was the right man to make JB dangerous again {I mean c'mon - Moore couldn't intimidate a child!}