Yes, the tactis of the Dominion, while sometimes incredibly effective on a military level turned against them when it comes to the political level and the improvement of their Empire. The Aurin are a good exemple, but the Granok are another one : the primitives stone-like species rejected the Dominion, but crushing them was useless on a global point of view, for the Granok were primitives and thereforce not a threat, they couldn't even leave their homeworld of Gnox. Leaving them alone would have been easy, but the Lumini at that time wished to destroy them. The result is that he reinforced the Exiles, wasted countless Dominion's lifes in the war on Gnox and must now face the battle-hardened Granok on a lot of conflicts (which would have probably be a Dominion victory without them). A succes of the Dominion is the incorporation of the Draken : only one creature was killed, the suprem Clan-Lord of the Draken and the Dominion won the inconditional loyalty of these ferocious hunters and killers. This victory was not achieved by total destruction, an enormous war and countless deads, but only by a wise use of the Dominion knowledge about the Draken. For me, the Dominion (i.e : the Cassian and the Mechari) deviated from its original purpose (whatever it could have been) and the Lumini and the "nobles" of the Dominion were wonderfuly played by the Eldan, who managed thanks to Dominus to erase their threats during the First Contact with the Cassians. Somehow, the Exiles (probably without even understang it and not deliberately) are closer to the original goal of the Dominion (gathering other species under human leadership) than the Dominion, even if they are less effective.