Beasts and wracks, hooray! I always love seeing people fielding stuff that isn't deemed super competitive, as it adds a lot more variety to games - if everyone fielded the same cookie cutter internet lists all the time, the game would get very old, very quickly. I've actually started running a squad of nine wracks with a haemonculus, and they're brilliant fun - great for holding objectives, the models look great on the table, and because I've mostly given up on doing combat heavy lists, they're nice to throw at a combat hating army like guard, as they can take the overwatch with their decent toughness, then wound them on 3s with a re-roll. Holding an objective with a pair of liquifier guns is nice too.
In your list, like Darklight, I'm not sure about the Hekatrix either. I'm not saying she shouldn't be there as such, but her loadout might not be the best for her, as wyches rely on striking first, not striking hard. Giving an initiative 6 character a weapon that makes them go last might not be that great for her. Personally, I don't think axes suit the DE esthetic either, but that's more down to personal taste. I suppose if she rolls well on combat drugs, and gets a second pain token then she'll be an absolute beast, but I'd be surprised if she survived that long. It's not like with orks, where your opponent kills a ton of boyz but doesn't do enough wounds to get to the power klaw wielding nob, or marines where their sergeant passes all his armour saves then power fists the enemy into a fine paste. DE need to go first, or they most likely won't go at all.
I guess you've got a load of warriors and not enough vehicles to transport them, hence the situation with the maxed out squad. If you don't have the Raiders or Venoms to transport them, divide them up into two squads of ten anyway, then have a dark lance and blaster in each squad and lose the sybarite. It gives you more flexibility and more objective holding capability. Unless the plan is to do a big ol' warrior conga line between two objectives. Is that allowed? I hope that's allowed. Anyway, two squads of ten, both with two lances, gives you the ability to take out two tanks a turn with them. You can even field them next to each other so they're firing at the same tank and you're not losing any shots. I'm not saying this is the best thing you can do with them. It's just what I'd do with them. The sybarite is only really needed for combat in my opinion, or for displaying your kabal colours with that cool back banner they come with. Alternatively, if you have the models, mount a squad of ten in a Raider with splinter racks, they'll be more useful than a foot squad of twenty. A big squad might hold their objective unmolested all game, but it could end up costing you it when you've sunk over 200 points into it rather than buffing your other squads or adding another unit.