So this is actually discussed in Qliphothic Astrology. I’m just going to address what I see here. However, it goes over the planets, not the Black Moon Lilith.
Here is something that needs to be understood: Astrology is actually very complicated. You can’t look at it from a surface level, otherwise you shred off important information. “Weak” energies or signs/planets in your chart, aren’t necessarily saying that you are going to have a hard time working with those energies. It doesn’t dictate what you can work with, rather, it serves to reveal what spirits/skills might best compliment you based on the exact moment you were born and when something is Square, etc, it shows what energies can help turn that weakness into greatness. Much like in @Twilight_Dragon’s case.
My Solar is Virgo. This pairs me with: Zepar, Alloces, Botis, Camio, Bathin and Murmur.
These are spirits that are mostly associated with: Familiars, Necromancy, communication, divination, sex, herb craft, astral magick, shapeshifting, and alchemy.
If I get specific and go off of the exact degree, I get Alloces only. I haven’t worked with Alloces before and obviously I don’t have to and neither do you. This is just another tool to use. It’s not your end all be all.
^Those are practices that I’ve been doing for a long time now. I didn’t even know that this was the case until I came on this thread and decided to pull out the book from my shelf, so for me that says something.
Really, working with those “Weaker” energies would actually help smooth out the rough areas of your chart. Especially when worked with on internal level.
For example, let’s say that someone was born under a Mercury Retrograde. Obviously, they’re going to have that detriment in their chart. Working with Mercury in a internal manner would actually help blunt the detriment. It’s not that they can’t or will have a hard time working Mercurial energies.
So, Dark Moon Lilith is what is our most repressed emotions and aspects of ourselves (or rather the chart) that we shun and hide away. It’s apart of our shadow. So depending on what sign is in your Lilith, you could work with those spirits to help in your shadow work for example.