There have been many rumors circling that Mac will meet his demise as his brother Robert did---at the hands of Cesar Faison. Certainly, Faison has a fascination with killing Scorpio men and obsessing over their women, but GH Head Writer, Robert Guza, Jr., warns us that things may not be as they appear. When asked about the character of Mac having to be killed off to free up a relationship between Felicia and Luke, Guza replies, "Not necessarily. I know there are rumors floating around that there's this idea that Mac has to be gone for Luke and Felicia to [get together]. But that's not true. It does not have to work out that way. You need to have Felicia and Mac fall out of the relationship they're currently in, sure. But you can do this in a variety of ways: Mac being killed, Mac being taken away to prison [?!], Mac turning [into a different type of person]. One of the arcs we're building for a while now is that we are seeing a different Mac after he goes after Faison. This is closer to the Mac of yore: the mercenary, the tough guy. This is no longer the Mac who cares about the niceties of police procedure. He is going after the man who killed his brother and has been tormenting his wife. So the gloves are off."
Will a more daring, cut throat Mac continue to keep Port Charles on its toes? Only time will tell, because ABC won't. The network is notorious about not releasing contract negotiation information until the last signature is inked and the film is in the camera, so until then, all speculation and rumor is just that and should not be taken as fact. As the true info presents itself, we will be diligent about bringing it to you.