Hi, new to the mod and having fun so far! I'm fine with getting rid of rank fire, but just curious about how historical this drill is. Did they do it as depicted in Empire? Is the way you have it in ER more accurate to history? Either way I think ER's combat is far superior, and I'm glad to hear about a morale increase across the board. One thing I'll criticize you on is both units routing from melee combat. One thing I see a lot is after a melee, the victor also routs because they become so disordered from combat. Units also tend to charge into combat very slowly.
Anyway, on to my main point about Spain: This was discussed a lot in vanilla Empire too about Carlos II. He died in NOVEMBER of 1700, the same turn the game begins. I and a lot of players thought it was unfair that Spain be saddled with such a terrible king for possibly half the campaign or whenever he finally dies, when historically he should be dead by turn 2! One solution is to have Spain start with his successor Philip V, or set Carlos' age to like 99 so he dies very fast.