Return of Khador player! Plz help me!

Vlad1 is good with almost everything. But WG Rockets are good and Vlad1 provides one of the few ranged buffs in Khador, so he makes a good unit even better. Hence the popularity of the rockets.

However, he doesn't need to run with massed rockets. Winter Guard Kommand is a good theme with him, as it covers one weakness (survivability to shooting - Vlad1 uses quite a bit of focus every turn, so has less for powerup protection - sacrifical pawn helps with this) and exaggerates a strength (moving jacks forward fast - the advanced move benefit gets them even further forward). That's in addition to Signs and Portents buffing rockets.

I've liked him in Winterguard Kommand with: one unit of rifles + rockets; one unit of WG infantry + command attachment (sprays + Signs and Portents are very good); 2 pieces of free artillery and the WG Gun Carriage. That gets me 4 Advance Move jacks. It's quite good shooting and is quite fast. Certainly not WG spam (about 25 WG infantry models).

As for the Devastator, it could work with Vlad1 - if you use the feat to move it forward fast, you get a very tough jack potentially where the enemy do not want it to be. If nothing else, that helps create scenario pressure. The Rain of Death attack gets the benefit of Signs and Portents on the damage rolls, while Signs and Portents also helps with the Devastator's lower MAT and P+S. It would not be my first choice with Vlad1 (and I don't think I'd choose more than 1), but it's certainly playable.

OW2 is (at a very high level of generality) sort of like Vlad1, in that she can make almost anything work well. Don't leave home without mechaniks to repair her and the first priority for her gun should always be targeting models that can threaten her directly - blind them to take them out for a turn/reduce focus/fury efficiency. Prioritising what to do with her Focus every turn can be hard. Windstorm is great to protect from shooting, but leaves her with less focus for other things, and she has a great spell list. Huge bases are tricky when you start using them, but really it comes down to practice in working out how/where to move them.