I love
Lilias! It's such a wonderful change from all the other Lil names that have become so mundane in recent years.
I can definitely see it aging well and can't think of any reason why it would be anymore subject to teasing than another name.
My instinct is to pronounce it LIL-ee-us. Is that right?
Lilias Mara is gorgeous. I'm not typically a huge fan of
Mara (as I feel it lacks personality) but it really does work well in this combo! (I'm not big on mary either.)