The Juggernaut will not be maked in CGI
Checkin on IMDB, Internet Movie Databes, I've seen that in the X-Men cast there's the Juggernaut, and it will be played from a 6' 2'' guy.
Now, a 6' 2'' guy is not sufficiently big to even remember how big the Juggernaut is.The Juggernaut is 6' 10'', weights near half a ton, it's one of the biggest brick guys in the Marvel Universe.
For the FF4 movie they covered Michael Chicklis in a suit, that's ok, Thing wasn't much big in his first appearences, but the Juggernaut is hella big, he's of the size of Professor Hulk, they are gonna ruin a character using an actor instead of using CGI creating a totally artificial character like it happened with HULK movie.