Arsenal Control - Domination

[brass_eagle]

When playing my 2nd Arsenal dominator, I focused heavily on control. She's in the late 20s in level now, but I've noticed she has a really hard time building domination. This seems to be due to the fact that only 3 powers (she only has two of these) in the set actually build domination... Tranq, Cryo Ray, and Flashbang. 

 

I know there's some complicated stuff behind the scenes with the other patch/pet powers, but is there anyway domination build up could be added to them? 

[arcane]

Do you, like, not have a secondary too?