I would suggest a change to the replacement engine. Given how poor most powers are in this game, it is very difficult to buy enough replacements to help your units stay topped off, and I have found it almost impossible to ever buy any new units at all. But what makes the current model completely untenable is the system that pulls a chit\element from the pool to drop it into a unit’s empty slot (something players can’t see or know of the need for beforehand unless they know the OOB very well ahead of time).
What is needed is to keep the current chit model for replacements to rebuild damaged units and add a new production only model where players can buy individual elements to be used to plop into units if they want them. If this change can’t be added, then I suggest the priority for chit use be reversed so no unit may pull a chit for itself until all replacement calculations for the current turn have been done first.
I would also suggest each power receive a minimal 1 chit of inf and 1 of militia each turn automatically and 1 cav chit every other turn automatically. With attrition so brutal in game, there is simply no way to keep your armies alive with such small incomes that currently exist in game. The free chits would help to keep your units from disappearing completely and not change game balance for the strategic options by adding new income into the game.
Jim