*Gain a Mothership class vessel from Homeworld, it could be the Pride of Hiigara or its earlier Kushan equivalent for example. Whatever species you pick you will receive its full techbase and can construct every vessel they had access to their own creation. Yes the Progenitors or Beast counts.
*Are a solid leader and admiral and could successfully undertake perilous journeys like those of the Kushan or Hiigarans and come out on top in the end mostly intact.
*Have a loyal population that will live, fight, and die for you. Any losses can be quickly replaced through some method, maybe you have cloning bays or find new people to hire.
*Can optionally be dropped into the setting of Homeworld.