Hi Paasky.
Sorry, I've been covered in work for the last few days.
For the musketeers and riflemen: I think you came up with a nice idea on this. It sounds balanced and interesting. However, there's one point: riflemen were, in napoleonic times, usually deployed in line. so I think they'd do better on the defence, being professional soldiers and marksmen. Having said this, musketeers were cheaper (they'd be less well trained) and usually deployed in columns to charge the enemy with the bayonnet. So, basically, i'd think it be better if you do the following:
-musketeers 20% cheaper, having 3-4 firststrikes more
-riflemen +20% strength (or give them something like +10% strength and a higher ability to withdraw from combat to reflect their professionalism in keeping their formations even under pressure).
Does this sound sensible? Or do I just reveal, how little grasp i have of civ?
another point for the cavalry: i think it should be the other way round: giving the lancers the first stike (in order to reflect their ability to charge infantry masses with their lances) and hussars the extra movement, in order to reflect their 'hussar-style-volatility'.
One more point: great work you're doing, Paasky, what would we be without you

.