Super Smash Brothers - Copy of Sakurai's "Think About Video Games" column

"In the end, if a game isn't fun, then there's no point."
Oh, I am going to quote the SHIT out of this.

Read. Lucina is unrelated to his decision not to use Chrom.
Chrom doesn’t really bring anything new to the table, so he went with Robin instead.
Lucina is just an extra that was originally planned to be an alt for Marth. They decided against that because Lucina is her own character, not a female Marth.
She was going to be in the game anyway, Sakurai just decided to slap on some minor differences give her her own slot.