Concerning the ranged combat, I'm confused why you have a tactical weapon acting on a strategic scale. I can see that with magic (you have limited casters, ammo limitation with spell points, etc) but adding in a ranged combat seems very unbalanced (on the strategic scale). Its also potentially very unbalanced unless you are going to start limiting it with ammo, resupply, etc. Magic has built in limits, right now archery invites spam for strategic attacks (which based on the distances implied with walking is very unrealistic as far as arrow range).
Will horses allow you to do a cavalry strike on the strategic map as well?
Personally I would say keep combat confined to the tactical arena. Leave ranged strategic combat for the magic casters.
Ren