To talk more about the structure of whatever content If we do get more alternate leaders, my assumption would be that they'd be included in a Civ+Civ+Scenario pack as a replacement for a the second civ in the pack. Only getting a new alternate leader would feel pretty bad in my opinion, since you wouldn't be getting a whole lot of value out of that DLC. You wouldn't even get a new civ, just an altered way to play an existing one.
So I would expect New Civ + Alternate Leader for a related existing Civ + A scenario that involves both civs. However, considering how much work it takes to make an alternate leader, I wouldn't expect more than one, maybe two depending on what they feel they could swing in terms of variety.
Regarding the "Is the alternate leader appropriate for X Civ?" aspect of the discussion, I am far more invested in gameplay than the philosophy. Thinking about this from a game design standpoint and not a historical-political one, there are two primary question I would ask:
- Is the Alternate Leader able to significantly change the way the Civ is played?
- Do they have synergy with and are able to at least utilize the existing Civ Ability and Unique Infrastructure?
The second point is actually my main criticism with Eleanor. She works wonderfully with France because of their culturally focused effects. But with England, she has some tangentially related Loyalty effects that requires a lot more work to leverage.
If there are uniques that
don't make sense is there a way that you can use the Leader ability to MAKE them make sense?