Don't get me wrong, It's Always Sunny in Philadelphia is one of the greatest shows of all time, but I wouldn't be too pissed off if Danny DeVito didn't get the job. Knowing Illumination, they'll probably pick someone younger who wouldn't mind...
I believe that Nintendo is using the Mario Movies to revive dead franchises and boost existing ones, as DK got a new game, and rumors say Star Fox is as well, in addition to SMB Wonder releasing and getting DLC featuring Rosalina the same years...