I got a US account and downloaded the demo, here's my thoughts:
1) Online is ridiculously imbalanced - I've played 10 games, always as evil, and lost them all. The fact that the good side is usually always full says everything. On the Shire map they had Ents almost straightaway, and whilst I've seen Gandalf I've never once seen an evil hero.
2) Everyone seems to play as mages or archers. I felt the developers have got this badly wrong. Did they not watch the films? Most of the fighting was at close quarters, and there certainly weren't lightning bolts going about. I like being a warrior but no one else seems to.
3) The capture the point online mode is ridiculous. If the enemy has 200 points and captures all the points on the map, you can't respawn and basically they've won already. This is ludicrous, and I certainly won't be playing this mode once the full game comes out.
It is a lot of fun, particularly riding horses or wargs, but I can't help but feel it will be frustrating if they don't correct the balance. Allowing for specific-class battles (warrior only) would also be a great alternative, or, at the very least, do away with mages.