I like Fleetwood Mac but they are nothing compared to when they were Peter Green's Fleetwood Mac. Yet no one seems to remember the blues days when they talk about FM it's always Stevie Nicks. I think she was a huge step down compared to what they were doing before.
Just because you copy the original as much as possible doesn't mean you don't suck. In fact, some of the worst remakes of all time are people who tried too hard to copy the original. That's my two cents for what it's worth.