As I don´t play DA I don´t really have any pointers. The setup on the board was nice to show your points =)
Few comments I can make about the lists specifically.Minimum list: The one issue I would raise is the Terminator squad that walks in. I would suggest changing the Plasma cannon out for a cyclone missile launcher. The terminators get split fire, so you can always have your missile launcher shooting at vehicles, monstrous creatures, etc. while the rest of the squad focuses on infantry.1000 pt list: From my experience, lower point games for deathwing should be built using terminators (almost exclusively). Objective-based games would become an issue otherwise. That being said, I would drop the TL-lascannon from the Venerable Dreadnought, only because a BS of 5 is wasted on a Twin-linked weapon. I would suggest using an Assault Cannon over it.1750 pt list: I think having a different heavy weapon in the 10-man squad would be much better (see above about split fire). I've never used Knights, so I can't say too much about them (although I'd prefer paying 35 points extra for a Thunder Hammer/Storm Shield squad of 7 regular terminators). I would also drop the Chain Fists to a maximum of 1 per squad (with a Thunder Hammer/Storm Shield guy as well).