I follow this forum on an on and off basis, so apologies if this has already been covered elsewhere.
I've been somewhat frustrated for a while about the difficulties involved in selecting units, when several units are positioned close to each other. For instance, trying to select a unit of new slaves, while the unit that enslaved them is still standing on top of them, can be a bit of a pixel hunt. Trying to do the same thing when zoomed out is usually even more difficult.
I have a couple of suggestions for how this could be improved. Firstly, if I already have a unit selected, there's obviously no need to select it again, so it shouldn't light up when I mouse over it on the map, trying to select another unit close by. Secondly, I think some work could be done on the "detection boxes" (or whatever they're called, I'm no programmer) associated with different unit types, when zoomed out. For instance, the spear of the phalangite model often blocks selection of units standing just north of the phalangite unit, which is frustrating, and if I wanted to select the phalangite, I wouldn't be clicking its spear, but its body.
I hope this makes some sense, otherwise I'll be happy to elaborate.