I`ve enjoyed the military combat in age 4, its definitively different from the other age games, but it is quite fluid and fresh imo.
But one of the things that bother me a lot is when we have to use siege, because the physics looks really strange.
I will list some of the siege that I think still needs some work:
Trebuchet: Its really hard to see the rock that is being thrown, and because the zoom level is too close, it seems that the projectile actually goes over the game camera, or at least very close to the camera. It feels that the devs simply are drawing a Parabola dispite the distance of the trebuchet to the target.
Mangonel: Although we can see the projectiles being thrown, the “perfect Parabola” mechanics that appear in the Trebuchet display here on a smaller scale. So it just feels very artificial.
Cannon: Once again, it is really hard to see what is being thrown, but the worse is when it hits a unit, basically the unit dies just as if they shot by a gun, there is no impact feedback of the cannonball like in age 3 for instance.
I didn`t see visual problems with the rams and siege towers.