Found this link, but didn't want to necro bump:

I personally would enjoy faction specific Morale deck upgrade cards that are included in future expansions. The cards are already numbered 1-30 (which is how you can make sure your opponent has every card instead of duplicates and missing cards) so in a future expansion, the extra cards could be numbered 'X'-'Y' (5-10) and you replace those cards from your morale deck to make your opponents morale tests more punishing. They already have this mechanic in the Descent overlord cards, and I think thematically it would work pretty easily. The Morale cards could have the faction icon on the card to prevent Daqan players taking advantage of Waiqar specific morale deck upgrades.

Think about, you pull a morale card for your Waiqar team and for 2 panic, you get to resurrect 2 trays of infantry, or the unit receives blight instead of more panic tokens, or maybe all units engaged with your Waiqar unit take blight. They could even be specific to the unit that comes in the expansion, so advanced carrion lancers come with a morale card that allows them to attack early next round or gain an upgrade for the next round of combat.

Thoughts?

As an avid fan of this game, the idea sounds very exciting. However, I think about when I picked up Imperial Assault, and found out that every squad needed 15 command cards...and it kind of scared me away. I never participated in any events, and just stick to the campaign mode. I'm afraid this added complexity might then away those who are interested in picking it up as a side game, but don't want to sure a lot of time with it.

BattleLore 2E has a similar system for customizing your deck of Lore Cards to match your army's units and objectives, and it works pretty well there, except it takes some time.