I brought up Armigers because they were (at least prior to leaks) of consideration as a replacement for Venerable Dreads.
At 240 points though with full melta, I have to agree. GW really dropped the ball. Even 227 with the stubber is still way overpriced.
The D3 shots isn't really the issue IMO, Neutron Onagers also fire D3. The difference being that they're 170 points with that weapon, and almost identical in terms of statline. Armigers are also going to be ranging way ahead of your lines, so unlike Onagers they can't hang around a Dominus for easy re-rolls.
They need to come down to 200 points, then they would be at least comparable. I'm hoping the Knight codex does that, along with drastically reducing the insane points of their bigger brothers.
I'm gonna go with my original plan of four Venerables hopefully 30k rules for Armigers aren't garbage. I'm still getting three of them because I love the model. But yeah, hard pass in 40k until they get cheaper.
Have you play-tested any of your VenDreads with the twin autocannons yet?
On the topic of ranged anti-armour, what are your initial thoughts of a unit that has 4 lascannons, hitting on it's native BS3+ even on the move, but increases to BS2+ against anything with FLY. Has T7, 11W, -1 To Hit (Supersonic 20" move) and an additional weapon profile of: Range 60", Heavy 3, AP-2, Dmg 3 (BS bonuses the same as it's Lascannons)...for the same points as the Armiger though..??