First off, wych cult assault is very weak this edition, they're still just as terrible at giving hurts as last edition, but they can no long sweep most armies thanks to
GW thinking marines aren't annoying enough with their saves, they can fail miserably on assault(yay
2D6!), giving away a free overwatch, being out in the open, etc... Certainly not saying you can't run wyches in assault at all, just don't expect them to be decent like 5th ed.
Succubus loadout looks fine, though I might consider dropping her HWG, wouldn't want to use her in vehicle assault, so it'll be a shooting weapon for the warlord, but again, it doesn't cost much so not something that needs fixing immediately. I'm fairly certain you can't make liquifier gun
TL by bringing two, and since they're assault weapon, you can't gunslinger them. Shattershard is very much a "spare points" wargear, toughness test to kill sounds great, but think of it this way, you're essentially making T3 units roll 4+ to wound, T4 units roll 5+ to wound, which is just the same as using a S3 weapon. A lot of multi-wounds models have good toughness as well, so you're most likely looking at roll 6 to die on them... And for that, you paid that much points for an one use item on an
HQ who will be easily shot down... But, it could be a very fun weapon to play with, so I'd keep it in the "spare points" toys section.
Wyches, I've sorta covered above, they aren't that super anymore, but your loadout is very good and well. Their raiders though, may want to drop the TGL, it's not really that helpful, and should only be considered when you have spare points, again, into the toys section. Aethersails, well... just be careful where you move your raiders, with the stupid change to vehicle assaults, you don't want to move too close and get assaulted... As we also take S4 explosion hits this ed, because
GW loves opentopped!
Trueborns, well... shredders are bad, very very bad, look at the range, look at the
AP, and then remember that you have to roll scatter on a BS4. It could backfire on you, but even if it doesn't, it's not gonna actually do that much hurts: let's say you've got 4
MEq under the template, that's 1.11 unsaved wound... And then your entire unit is within 12" of the enemy's forces, well inside the range where your
NS upgrade is pointless, melta, bolter(or similar) spam, assault, everything can take your unit down now, and easily because we're
DE. Why not just stay at 36" and reap the benefit of the
SCs? Also HWG, while low cost, you really shouldn't have a shooting unit that can work perfectly fine at 36" move in close,
DE aren't known to survive, don't challenge that.
Otherwise, the list isn't too bad.
I'm not saying you should drop wych assault completely, if that is what you and/or your gf wants, go nuts with it, but just remember that they're one of the units who got hit quite hard by the assault nerfs this ed.
Also, I think you're using some apps to make the list? Otherwise there really is no need to list every rules and basic equipments.
