I like
Leah and
Leia, and also
Lea. I pronounce
Leah "Lee-uh", and
Leia and
Lea "Lay-uh' (although
Lea could be a little more like "Le-uh").
I like both, and personally I don't mind the
Star Wars-ness. If you want to avoid
Star Wars you should probably avoid
Leia.
Where I live, I'd only use
Leah as "Lee-uh" because people would constantly get it wrong if you used
Leah "Lay-uh". If I wanted "Lay-uh" but not
Star Wars, I'd use
Lea.