The whole film seems to be suffering from a complete lack of creativity when it comes to makeup and costume design. Beast doesn't look awe inspiring (for lack of a better word), he looks like a guy in a cheap costume.
I'm completely convinced that it's due to the time pressure of making the film happen. They just took a bright blue fur shirt stuck it on Kelsey, and even let him wear a suit or uniform so they don't have to apply any more prostethics to his body.
Juggernaut, on the other hand, looks like they put some thought into, but the result is equally un-impressive. The body suit looks less than convincing, and he just feels too small (with a ridiculous helmet) for a supposedly unstoppable guy.
Overall, the whole production seems to be leaning more towards a comic book feel compared to the "darker realism" of the two previous films. I'm sure many fans of the comics are happy, but I preferred the look and feel Singer's films. Of course, not having seen the film yet, it's impossible to tell how the end result will turn out, but based on what I've seen and heard so far, this just feels a bit too much like Batman & Robin to me.