Lilac is one of my favorite names, but my family hates it. I guess they just don't see it's sweet yet quirky appeal! Like you, I don't like
Lila near as much. It doesn't have the same spunky quality. Unlike you, I worry most about pronunciation problems. It seems people say
Lilac many different ways (most commonly Lie-lock or Lie-lack). I myself say Lie-lack. Regardless, it's a very pretty name and hardly used.
My combo:
Lilac Veronica
Other ideas:
Lilac IsobelLilac JosephineLilac MatildaLilac AudreyLilac BeatriceLilac CeciliaLilac NoelleLilac AntoniaLilac MargaretLilac MarisolLilac Georgina