Thrawn, and DN should be as fast as you can make them, but Vader should have your best speed mods. If he goes first and uses his AoE then culling blade, the dispelled AoE should have all your other toons moving next. Vader and palp NEED potency to do their job. The more DoTs vader lands, the more TM his culling blade will grant your team. And palp needs to be stunning as many toons as possible, especially against teams wih counters. DN does well with health mods due to his unique granting him more health whenever Sion gets debuffed.