Maggie was asked to join Hawaii Five-O!
Taken from here http://www.staradvertiser.com/features/featuresstories/20101024_crazy_ for_miss_q.html:
But that kind of depth was a big attraction to the part, which came at the same time CBS wanted to know whether she would join the cast of "Hawaii Five-0," according to the actress.
She won't say which role on "Five-0" was discussed, only that she saw an opportunity in "Nikita."
"When you look at something, it's about character development and where can this character go and would it challenge me," she said.
Pretty obvious the role she was offered was Grace Park's role. So in other words, lucky Grace for Maggie opting out!
Seems everyone wants a piece of Maggie - clearly, they see a lot in her acting capabilities.