Just a quick post here, while I was putting away the command squad I snapped a pic of the entire deathstar unit.
Captain, command squad and Librarious Conclave.
Using the Medusa Strike Force, the unit has a 3+ FNP. The command bikes have storm shields for that 3++ as well. Add in say, invisibility or the re-roll saves power and they are pretty tough. And being on bikes they are hard to ignore.
Just need to save up for another Stormtalon.