There are some issues though:
1) how is it going to fit in the mod alongside the complex recruitment structure?
2) how is it going to work with factions that have a very narrow unit roster?
3) how is it going to work with the more complex events that take place in EB, such as reforms that are not tied to an exact date?
4) what effect is it going to have on AI? -> The AI is already having trouble with crossing any distance at sea, and it doesn't make sense to script spamming of armies that don't really have a purpose.
5) what factions get to 'use it', and what factions don't?