I know this is irrelevant in most of the cases because leader effects are independent or can be combined achieving the same effect, but I found a case in which the order matters.
We are playing with the anniversary leaders pack and let's say we got the following scenario.
Alice has played both Acanice (first row second column in the image above) and Eniheduanina (first row, third column).
Acanice allows you to switch one of the science symbols, basically transforming one of the green symbols into a wildcard (similar to the guild).
Eniheduanina gives you an extra science symbol where you have the most.
At the end of the game Alice has in front of her 5 science symbols like this:
- 1 gear (1g)
- 2 compasses (2c)
- 2 stones. (2s)
Case 1
Applying the effect of Eniheduanina
first, will let Alice have the following configuration: 1g, 2c, 3s (or 1g, 3c, 2s - it's irrelevant).
Then applying the effect of Acanice
will let Alice have 2 complete sets by changing one stone to a gear, scoring 26 points.
Case 2.
Applying the effect of Acanice
first, Alice can get the max score by chaging one compass to a stone (or the other way around - again irrelevant).
Applying Eniheduanina
effect will get Alice the the following configuration 1g, 1c, 4s (2s + 1c turned to s to 1 extra s). This totals up to 25 points.
As you can see, switching the order of the leaders ends up in 2 different scores.
Main question
Is there an order in which the leaders effects are applied, or Alice can choose the order in such a way that her "profit" is maximized?