First of all, I never know how to say it: Emma-Lyn? Emma-Leen? Emma-Line? That right there knocks it down to not-a-good-name status.
Also, I really dislike the dowdy, frumpy Emma and the prissy, snobbish Emily, so even if Emeline had a definite single pronunciation, I wouldn't like it.
"It's one thing to be open-minded and quite another to be so open-minded your brains fall out."--Dear Abby
"Let other people push you around, and you deserve whatever bad things happen after that."--Lauren Bacall