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If Cactus holds true to form, they'll print one new Dominant in each major (read: booster) expansion. My personal opinion is that they should not be game-changers, however, the problem is that if they're not the most awesome dominants in the history of ever, they are dismissed as crummy or useless by some/most players (see also: Doubt, Glory). Honestly, I end up using these Dominants as often or more than some of the "better" ones around (HT, Guardian, sometimes DoN).
So they need to be 4 times better than Doubt and half as good as DoN Doubt would be in 40% of decks if it weren't limited to playing in the territory and playing only orange enhancements. If Doubt could EITHER be played into battle, OR could be of a brigade of your choice, then it would be great. If it were both of those things, then it would be in >90% of decks and would be bad in the opposite direction.
Now go ahead and propose ideas for them that don't involve discarding fortresses.
Rebuild - Good DominantDiscard a Fortress in your territory to search your deck or discard pile for a Fortress of the same alignment and put it in play.Isaiah 9:10"The bricks have fallen down, but we will rebuild with dressed stone; the fig trees have been felled, but we will replace them with cedars."