I really enjoy fighting high experience AI armies, ala the Mongols (Or the triple gold bar armies that looked so enticing in the Cataclysm). I recognize, however, that creating those is a lot of work for someone and certainly isn't everyone's cup of tea. My reasoning is that 95% of the battles I fight break down to:

1. Engage infantry lines.
2. Flank infantry lines.
3. Pursue routers.

Insert: Overrun poorly protected archers/artillery when convenient.

Reducing my forces doesn't change that as much as upgrading enemy morale would.

Also, if I could suggest, at some point we may want a Chancellor or Kaiser who insists on 'modernizing' our armies by disbanding those highly reliable crossbowmen and archers for exclusively gunpowder troops. I don't know about anyone else, but I've very rarely used little guns in battle (Excluding cannons and culverins) and I often wonder if they aren't more of a hinderance than a help. The morale penalty could be offset by experience again, but there's that work load.