Perhaps this is her "cold weather" costume? Like the one from the cartoon episode in Russia? From a practical standpoint, having bare legs all the time can pose some problems. One thing I do like is that this is still clearly Raven. The cloak and cowl are unmistakeable.
LOL I doubt they will used the crazy feather helmet. I mean you should have seen the directors face when I showed him one Skype the New 52 Raven.
I like the idea of cold weather though I would add to it a bit. But personally thinking of the actress I would head more towards her original costume or something similar. This is still a concept though.