tom cruise in mi3

When you say Tom Cruise, lots of things come to mind like Top Gun and Mission Impossible ... and it doesn't get better than that! I know, Scientology comes to mind, but that's not the point here!
Tom Cruise has been the guy for action movies like Mission Impossible since forever and it wouldn't be the same without him!
There's news that there will be a Mission Impossible 4 but Paramount wants a younger, cheaper guy ... would that work?! Personally, I don't think so!
Tom, although 46, is still at the top of his game and is the only one who can make MI4 work!
I wouldn't want to watch MI4 and neither would my husband if it weren't Tom playing Ethan Hunt!
What do you think? Is Tom Cruise now too old to star in Action movies? Or has he still got it in him?