I used to think that the availability of winning conditions was a good thing in the past - and perhaps it was given that with the costs of buildings in MI one can win the camapaign without having to starve other clans of land. However after i got back playing "original" STW (that has only domination as goal) i think that domination suits far better, and i enjoy that more, even the mopping up phase. In technical terms having domination as a single goal could have helped with tuning better the strategic AI capabilities to that goal - it was one the AI understood. In MTW, GA goals were a great mode of play but only when the player used them as a pretext to play slow expansion/little expansion campaigns. The AI did not understood them and so it was less competitive with them, not to mention that it was greatly undermined by the influence feature.