The growth mechanic doesn't depend on Living models just enemy models. Though what they kill does factor into it. To grow from a terror tot to a Young its non-peon models, and from young to mature it needs to be a enforcer, henchman, or master that they kill. Now that is the base mechanic when those models do the killing but if you get Nekima on the board with The True Mother she can do the killing and give that kill to another model within 6" of her to count as they did it. so she can help to facilitate that. As for Wp I agree they are on the average to above average range everything you will see in a Lilith crew will have a 5 or more so not really low, but not necessarily impossible to beat. and if your rocking models that can debuff the Wp well that does nothing but help. And the crew is raw speed. you won't really beat them at the game of speed, but maybe just keep up with it. as for attacking them, Range will be your best friend. Gunsmith's are your friend in any crew you choose to use. But Raspy is Master supreme in these cases. as for attack power they have a nice solid line and can stand up pretty solid against anything. the biggest thing on this is Arcanist have some solid choices. though we are kind of limited on the number or ranged models we have. As for balance from crew to crew, its never been that way. its designed to be balanced faction to faction. some crews are better suited for a wider range of things then others. Lilith is one of those crews. The game however, isn't so one sided. its setup for strategy and schemes to be achieved. Good movement and positioning have immeasurable effects on any game. forcing your opponent to spend AP on something other then achieving his VP while spending yours to obtain yours is how victory is achieved. And because of that it means that you have to pick the right tool for the job. look at what it is you have to do and what faction you are about to battle. in that you will get a sense of what your facing and decide for yourself which master has a play style better suited for victory. With Lilith, how your opponent chooses to play her can be just as devastating to them as to you. What I mean by that is that she can lull her player into a false sense of security, and that is even for confident players. A Lilith player can have the tendency to overextend themselves just enough to allow you to capitalize on some truly effective isolation tactics to cut out sections of her crew, or to allow you to slip past and achieve your victory conditions. other things to consider is trying to overwhelm her with someone like Ramos who can use his summoning ability to create more models to bring against her. that way she is spending AP dealing with something that is not her Victory conditions. All in all she is an uphill battle and even in the hands of a novice player she can be a wrecking ball. she can be quite frustrating to play against but at the same time when you beat her its all the sweeter.