Nice looking game.
Usually in Sharp Practice a unit will suffer 'shock' as the game progresses and morale will eventually break - as opposed to a unit getting wiped out. The challenge to SP 2 I think is how you utilize your leaders, i.e. to mitigate shock, improve firing, etc., etc. I've used SP2 for AWI and found it very challenging and interesting. If you like bigger actions I've been very pleased with Fire and Fury brigade (the old version).