This can't be serious;
If it's a remake, I assure that they won't do it justice in 50 episodes.
If it's a continuation how will they continue from the ending of the first series?
Either way, if they keep the same animation style, voice actors, style, and make it a sequel I'll be happy.
If they screw it up and change anything except the ending of the previous series, I won't be pleased. FMA was excellently done and will be hard to follow up.