Wait... WHAT? Isn't Lucina being a Marth clone literally the most sensible cloning ever created in Smash? I mean, in FE Awakening, Lucina takes the name Marth, dresses like Marth, acts like Marth, and even gets compared to Marth in some of her support conversations. Lucina is a descendant of Marth, she has Marth's sword, and she defeats Grima, like Marth. There is no other cloning that remotely comes close to actually mirroring a story arc.
For example, Roy is a Marth clone, but Roy is of a different bloodline (he's Eliwood's child), he doesn't wield Falchion, etc. etc.
I apologize for the confusion. I'm strictly talking about Lucina's actual fighting style, not her characterization, which certainly is an emulation of Marth.
Any combat clips and cut-scenes from Awakening, when compared to her fighting style from Smash, are like night and day. Lucina holds her blade differently, said blade has a different length, one of her primary attacks is healing Aether, she normally can't acquire counter, she's shorter, etc. Though the Smash team mostly captured Lucina aesthetically and voice-wise, her functional representation in smash doesn't capture her actual character from her source material whatsoever.
It makes sense to me why they did make her a clone, because it would just plain be easier to clone than create an entirely new model/move-set, and they could easily justify it just like they did by elements of the Awakening story. BUT, lore-wise, she had No way to know how Marth fought, and thus developed a distinct fighting style she gleamed from her father and her own training, not a carbon copy from her LOOONGGGGG dead ancestor.
I could also argue that Marth or Ike aren't great representations of their games, but at the end of the day, artistic liberties have to be taken to make things work, and I get that. They don't match every aspect of a character's lore so they can make us a fun game with a diverse and functional cast of Nintendo characters. I'm really appreciative that they put Lucina in, and I love playing as her. I just don't think that her physically fighting like Marth makes sense, other than because it's easier to do from a developmental standpoint. I hope that in a future title, she'll be de-cloned!
Anyway, back to Tiki! I think I'll commission an artist to make that hybrid design of what she may have looked like between Marth's saga and Awakening. I'll post here when it comes through!