I find it weird that you think it's a ripoff of Ella, when both names have been around for centuries - in fact Emma is an older name than Ella. It's not like Emma was made up to be like Ella. And Ella is really common too.
hah. I've always felt that way about Ella, as an Emma.Nothing personal, of course, I think they're both OK names. I just get a little defensive about Ella.