I don't expect to play skirmish games much if at all. So I'm not worried about upgrades and the like for skirmish play.
Do those you who have expansion packs feel it is worth it for the campaign game and if so, why? Also if you don't think it's worth it, why?
One example: they sell a general Weiss expansion pack. The core already has a card for general Weiss and an at st figure. So aside from a single additional side mission map, why spend $15ish dollars for that 1 map?