Yeah his characterization is quite alright, he has a great accent and a good voice. That's about it for me though, he doesn't look like Thor, he looks completely Anglo, and his low key beard and wig don't help.
I honestly think Thor is beyond saving in the MCU unless it's a complete revamp.
Well, dunno, I think if they go with a "less is more" approach with his costume and give him better feats, he might be salvageable.