I made a topic with idea how to implement it into UI 
Also:
- There should be a possibility to disable AI kiting+dodging.
- Would like to have possibility to disable automatic trebuchet packing for out of range buildings.
- Would be really helpful to see total economical (villagers + fishing ships + trade units) and military population counts in UI.
- Farmers should be counted as food gatherers during seeding (building) farms to avoid confusing fluctuations of food gatherer count when farms are reseeded.
- And please make it possible to select hotkeyed groups together without automatically appending them into one hotkey group!