Hello everyone, a couple of months ago I requested this for AOE4, Select All Visible X type of unit and other feature requests and to my surprise it was implemented gloriously!.
Basically being able to select all visible units of a certain type. AOM would benefit tremendously by having those hotkeys, making fighting in multiple points more manageable.
You already have implemented:
Select all heroes
Select all infantry
Select all cavalry
Select all range
Select all siege
The only thing missing is making the alternative to select only the visible units (so you don’t grab units that are already doing something important in another part of the map)
Just imagine how in the heat of the battle you could quickly select your heroes to pick a nasty myth unit, or quickly select and move your infantry to offer protection to your range. I know that you could ctrl-click, this is just a QOL request that I think it could make microing army in multiple points a bit more easy. Specially considering the chaos that sometimes occur when multiple units army clash and a bunch of visual effects appears over them.