A few suggestions to make life easier:



Re-assigning workers to different resources in cities: make the box re-size AFTER the workers are dropped into a category, not before, or make the box larger when some workers are being dragged. Makes it easier because sometimes I "miss" and drop my workers just outside of the box because it was originally taller but was automatically made smaller.



Change brightness/hue of units or make them flash slightly when they are selected in battle: sometimes it can be difficult to tell where the selected unit is as I'm selecting from the initiative order at the top. Especially if it's big enough that it covers up a lot of the selection circle, and in winter there's a lot of white on the screen, making said circle harder to spot as well.



Make movable tiles in battle more obvious: right now the tiles that a unit can move to do look different but depending on the terrain it can still be hard to tell if it is different enough.



Make it possible for a unit to attempt to move to the position of where a unit was standing: maybe with control or alt, although I'm not sure if this already exists or not. Example is if I have two units: I want the faster unit to move and do something, then the slower unit to take its place. As far as I know you can't do it directly without the help of stuff like using attack orders on an adjacent enemy and whatnot.



Thanks