I agree with what many of you have said. Lilith is a good model that isn't top of my personal list to be replaced. I'd much rather see new units or reworked versions of stuff like beasts or our old special characters.
That said I'll definitely buy a pretty new model, especially if they give her a bit of a rules bump as they did with Drazhar and incubi!
Imagine they gave her some improved buffs to wyches and/or a cool new strat to make her an even better character beat stick