Hi,
The rule book doesn't give an answer - frankly said it does, but I don't like it.
I'm not sure, how to handle the situation as imperial player, if my rebels decide to deploy an ally in campaign... my hesitation is about the timing, when to select the cards for my open groups. Is it before or after I know the there is an ally?
If I read the rules correctly, the imp player selects first the open groups, and later the rebel scum decides if/which ally to deploy. But this feels unfair, because it's stupid to load the open groups with expensive troops which you normally couldn't afford or bring in play far too late. It's all about the missing information how much threat will be available during the mission.
I guess, an experienced imp player can provide a swift reply with a good advice. Maybe there was in later expansions a rule change which can be applied also to the core campaign? Or do I bother simply to much?