I'd be surprised if that wasn't intentional-- kind of a "sign of things to come" thing.

 

I think the cutting wings scene was intended to show the lengths mutants would go to hide their 'differences'

I'm sure it was meant to be even more bloody but was toned down. Angel's had his wings clipped more than a few times.

There really isn't much blood in the movie even though Wolvie has a good 5 minute spree of carnage.

 

I think Wolverine spent more time crying in this film than anything... 

 

Yeah, i know what you meant but i kinda pleased by the subtle character growth of Wolverine throughout all 3 movies...