The pilot bore little to no resemblance either to the source material or to the character's core. I'm pretty flexible on what I'll accept, but in this case:
1. Diana is the head of a corporation that makes money selling her likeness in order to fund her crimefighting which involves a lot of high tech gadgets such as mini-jets.
2. Diana tortures a man in a hospital bed, something that the police are used to seeing, despite having the lasso. She has a reputation for over-the-top violence.
3. Diana uses lethal force against normal people with guns, killing people she could have easily dispatched without much effort.
4. Diana invents a secret identity just so she can take a break and sits in an apartment by herself with a cat crying in self-pity.
5. Not overly relevant, but the costume was hideous
This character just wasn't Wonder Woman. The corporation, the tech, the violence, the torture - none of this has anything to do with any version of Wonder Woman that I've read/watched for the last 40 years.
Add to this that Elizabeth Hurley was over-the-top campy as a villain and the whole thing just fell flat.