Having played Dark Eldar for a while I used to always give them flickerfields. Then I did a re-haul of my points system and realised that they were doing much for my army.
In my opinion drop all of the flickerfields. Your Raiders are likely to stay just as strong with them and there's the Jink rule anyway.
Regular Heamy with liquifier gun ALWAYS. Three Truborns for the blasters or drop one and upgrade the last one to a blaster carrying trueborn as well. It's what I run and it's a great squad in a venom with two splinter cannons.
AV and
AT in one.
Splinter racks for the warriors is great. Keep that but get rid of the blaster in this group. Warriors are more for
AT then
AV so one
AV vs 9AT isn't a great investment.
I like the Wychs. They're fine.
Warriors with Dark Lance is a big No-No from me. I used to do it and it never proved to do much. It was a waste of nine poison shots for one
AV shot. Drop it for another splinter rifle and I would consider trying to get them into a vehicle but with everything else going forward they might be okay. Don't be surprised if they get gunned down as an easy target though.
Not a bad list in my opinion and I like Wracks myself. They prove to be a fun little unit to use as a surprise from the standard toughness that we suffer from