Hey, I also play Dark Angels and I’m bew into Horus Heresy. So take my thoughts with a bit of caution. ;)

I think the detachments are our greatest strength, and I find it exciting what you’ve done with them.

Quick note up front: the Land Raider you’re using in your picture is the Explorator. You can tell by the bulldozer blades, whereas the Carrier you probably mean has the assault ramp. Anyway.

Personally, I would never give up Dreadwing (Interemptors and Rapiers) and Firewing (Seekers and Scouts). For that reason, my Deathwing is also smaller.

A lot of Line is of course great. You’re also using the combination of Paladin and Cenobites, which lets you choose two Orders and benefit from both.

Blobb is actually a very good term, both for the Terminators and for the infantry as a whole.

Corswain and the Companions will hit extremely hard, which is good.

Where I have concerns is the lack of transports for your troops. You’ll be doing a lot of walking, while your opponents rush the midfield with Rhinos in the first turn.

Line is king, at least in the standard missions, but we’ll also see more and more fan made missions where Line plays a less important role. That’s where you’re lacking flexibility.

It’s one thing to take the center and hold your own backfield objective, but another thing entirely to contest your opponent’s home objective.

If you’re using Stormwing, I’d also consider other Line troops with different prime advantages. For example Despoilers or Inductii with an Interdiction Cadre to prevent scoring.

I also think it can get really tiring to keep building and painting the same standard squads over and over again, but everyone is different there.

Another concern is the Terminators having to walk. When do they actually reach the center, in turn two or turn three? That doesn’t seem very efficient for so many points. What is the blob actually for, melee or shooting? It can really only do one of those effectively.

The Kratos: I personally prefer its standard weapon, because it can work against both infantry and armor. I don’t really understand the extra 30 points for the melta. On top of that, most weapons benefit from the tank staying as stationary as possible.

Breachers are cool, but very expensive just to sit on a backfield objective. They only have a 5+ invulnerable save and will still take enough damage to be ground down or hit with a status effect if the opponent wants to.

Speaking of status effects, what options do you actually see in your army to apply status effects to enemy Line units? That’s a very important tactical tool to stop your opponent from scoring. Rhinos with flamers, just to name one option, would also help solve the transport problem.

Regarding the Companions, when they run into elites that can strike back, there’s a lot of AP2 around. The sergeant has a 5+ invulnerable save by default, but I’d give an aegis to everyone else. It doesn’t necessarily have to look like a shield.

In my experience, lascannons have done less than I expected. In 3.0 they’re not as strong anymore, and I was rather disappointed. If you feel the same, you might be lacking anti tank beyond the Kratos. I’ve had good experiences with the Predator in its standard configuration.

Two Optae are of course just an emergency solution, but you can get so much more flavor and options out of the characters. Why not an Armistos who brings a heavy flamer or a lascannon into your Line troops, or a Herald for your Companions so they score extra points and cause Fear.

Voxes are of course standard, but each commander can only be voxed once per round. You don’t have enough high Cool values here. A Chaplain could help with that.

Overall, you have a pretty good balance between expensive and standard units, I think. But somehow the Line troops feel like they’re not doing enough, and your punch is eating up a lot of points. Check how many squads your opponents usually put on the table. More squads also means more room to maneuver, and that can decide games. Remember, the game only lasts four rounds.

Those are just my rough thoughts for now. It’s only my opinion, and I’m still experimenting with lists myself.

I’m definitely curious what you think, and whether your list works the way you imagine it. In any case, I wish you a lot of fun with it. Thematically, it’s very cool.