Yeah movement is an issue for me as well. Sometimes you have to give an order multiple times before a unit starts moving. I also don't like how movement gravitates towards buildings or control points; if I want to target an area next to a building or control point, instead of going to that specific location, it will just give me that blue line and target the building instead. I don't mind if it does this a little bit but the distance on the 'gravitational pull' seems a little extreme. In addition, units also seem to have trouble moving the entire unit into range of the enemy when engaged in combat. This is especially true when you have bigger armies where the frontline will attack but units slightly further back will sit there and wait for the frontline to get destroyed. Even when I give a direct order to attack more often than not only half of my group will engage the enemy, leaving the other half just sitting there doing nothing. 

Bombers also behave strangely. When you target an enemy their first bombing run makes sense but after that they often start circling the enemy, sometimes not even firing off any shots. They also sometimes drop their payload prematurely, even when you click on a specific unit or building. 

I also agree with all of this.  Units that are attacked at range should probably have a default of moving towards or away from the attack unless they are given a more specific command (that doesn't exist as of yet).  Or maybe the more specific commands are the solution.  Have an entire army set to "hold position but counter-attack if attacked" and if attacked they all attack and not just the ones on the edge who are being attacked.

I haven't been using air units for a while now.  The AI doesn't use them (at least up to challenging difficulty) and because they are constantly moving they are very hard to select (or at least they were in the last build, I haven't used them at all since the most recent build).