Definitely, and especially since there are certain things that have happened which still resemble the 5YG universe. Matt could turn without realizing it, believing to do good for his own needs despite the morality of it. He has done so several times in the course of the series, he even tried justifying his cheating on his police exam to Molly saying that it was his "given talent". So yes, definitely Matt could be a nominee for a hero-turned-villain, much like his future!self.

One of the things I like about Heroes is the comparisons between 5YG and how the characters are slowly transforming into those future versions of themselves. Pretty clever, I think.

YESYESYES! THAT IS EXACTLY THEIR PLAN ALL ALONG! FINAL CYLON MOHINDER FTW BB!