Way I see it, Lucina sounds like a Marth with improved power distribution and a character design that's actually appealing to me. I'll take it!As sad as I am that Lucina is a clone, at least there's some difference, and *hopefully* (though at this point I'm not expecting it), Sakurai would give a bit of alteration in her special moves to at least differentiate them a bit more.
Also, gotta love how much detail Sakurai puts into the games he works on. Dat Mark of Naga