Doomwing costing was inherited from the original Stigmatus Coven list, though they do seem rather expensive, especially compared to something like the Helltalon bombers, which I would say overall are (slightly) better, yet substantially cheaper.

Maybe the Doomwing could go up to 30cm range for it's weapon like in the Epic-UK TS list? They've altered Fire Lords cost and made them cheaper too. I'm strongly opposed to their change of making their bombs BP2 rather than D3 BP though - Tzeentch is the god of change and randomness and random elements like this in the list are highly appropriate.

I keep bringing it up occasionally but please, please consider giving the Chaos Altar the option of a split profile choice just like a Daemon Prince can have - with slow and tough armour or fast but weaker armour. Chaos Altars are extremely thematic (I have beautiful extensively converted altars for each god that really show off what the god stands for and the mutated weirdness of chaos, much more than infantry can at this scale) and I always take one per chaos god I'm fielding in the game for modelling and theme reasons, not wanting to use Hydras at all. Unfortunately they're so slow and can't garrison so you're left with many expensive slow formations and limited tactical choices, particularly when using 4 altars in a 3k game as I often would. The end result is in practice I simply choose to play other armies instead while my LATD kick their heels unused on the shelf. If they had an alternate option of dropping to a 5+ Reinforced version in exchange for a 25cm move that would be fantastic as they could also be used with mechanised formations. They'd slow them down a bit, so be a trade off - like adding a Land Raider to a Tactical formation. I can definitely imagine some chaos factions - Slaanesh and Tzeentch in particular - building faster, lighter altars compared to the others and there's no inherent reason why a large altar needs to be slow, there are plenty of ways they could be made fast using technology and/or chaos weirdness. As it would be an alternate optional choice it would add the option for those that chose to use it, while not effecting existing peoples lists if they don't want to. I'd definitely playtest this and the list a lot (6+ battle reports) if you were to trial it.

What about the technicals? Tried them?

Regarding the Altar, giving it a split profile is an interesting idea; though to play devil'sDaemon's advocate, why not go whole hog and have 4 different profiles, one for each great power? Tzeentch one can then have skimmer for instance, nurgle have 4DC etc etc.
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