Well, one thing about it: when PG first appeared and she was a sarcastic, smart ass bitch, she stood out. Now a lot of characters are written closer to her, which hurts a little bit. I also always felt her bitchy personality was a cover up for her more troubled side..she's interesting because she can be an obnoxious big mouth one second and crying to herself the next..she has a different kind of vulnerability than the nerdy Clark Kent has, but she has it and that makes her easy to care for.
I will say I am surprised that DC went away from a visual that was so popular and made the character so famous. It's clearly change for the sake of change.