I do alot of what I call "List Building Exercises". No I am not doing pull ups (maybe I should be). Instead I am working on finding the boundaries of what can be done with a codex. That being said, I attempted my first Dark Eldar exercises. The sad part is that it took me about 5 minutes to find this list once I sat down to do it.
3x Kabalite Trueborn (5) with 2 Dark Lances and Raider = 170 each
total lances = 9
3x Scourges (5) with 2 Dark Lances = 140 pts
total lances = 6
3x Ravager with 3 dark lances = 105 each
total lances = 9
Totals are 1245 pts and 24 Dark Lances
Now simply add in what you want. Personally I wouldn't go this direction but we must take the exercise to the logical conclusion, so lets add warriors with raiders.
6x Warriors (10) with 1 Dark Lance and Raider = 175pts
total lances = 12
This gives us 2295 pts and 36 Dark Lances. It also gives us 9 Raiders and 3 Ravagers with 90 infantry. Look familiar?
Another options is full 10 man scourge units. Here you get 30 lances for 1665. Then you need troops etc.
One thing to remember is that there is alot you can do with this. You don't have to add more lances than the base. You can then add in the Baron, and take massive Hellion troops, or Haemonculi and wrack troops w/raiders or venoms. Even going the wych route with the base firepower behind you would make an interesting list. Oh yea, you can even take Asdrubael Vect and Baron Sathonyx for a +1 to your deployment and a 4+ seize the initiative, there is that many points left over after the base.
This gives you a good understanding on what you can do with lances. It is not a very playable list yet. It's just the first step in figuring out how the new codex will work.