Well, in a way, Sophia was replaced with Sophie, as an elf makes more sense there than a human or clipped half-elf for that role. Especially one, that might have been on Dark Elf hormones. XDWow I didn't realize those are the same characters, that's pretty crazy
That said, Sophia could have been an interesting character, but most of the themes she could have explored have been done by other characters now.