First of all, I'm thrilled that these rules are going to be in the core. Does this mean we're going to have domain rulership systems as well? 
Second, to the rules themselves: I like the sound of them. Nice, simple, solid, and hits all the bases I'd want it to hit, including morale and the ability of individuals (solos) to affect the outcome.
The one thing Mike didn't mention that I hope they address is how to scale Battlesystem up for really big combats, where you have 50,000 troops duking it out instead of a few hundred. On the surface, this ought to be a simple matter of increasing the number of troops in a stand: Just change "ten" to "a thousand." However, this might run into problems where solos are concerned. Can a stand of 1,000 troops all concentrate fire on a single solo? Can a solo have any effect on a stand of 1,000 troops? What happens when a wizard solo throws a fireball, how much damage does it do?

Second, to the rules themselves: I like the sound of them. Nice, simple, solid, and hits all the bases I'd want it to hit, including morale and the ability of individuals (solos) to affect the outcome.
The one thing Mike didn't mention that I hope they address is how to scale Battlesystem up for really big combats, where you have 50,000 troops duking it out instead of a few hundred. On the surface, this ought to be a simple matter of increasing the number of troops in a stand: Just change "ten" to "a thousand." However, this might run into problems where solos are concerned. Can a stand of 1,000 troops all concentrate fire on a single solo? Can a solo have any effect on a stand of 1,000 troops? What happens when a wizard solo throws a fireball, how much damage does it do?