what about not moving for more than 1 hour puts you in hiding mode, and, depending on your troop amount, reduces the distance you can be seen from by half or more. Needs more thinking (and coding )
+1 automatic hiding, one less thing we need to click and works anyway is customer friendly
it should depend also on terrain, i can hide in a forest pretty fast, but on open plains or on the desert i would need to dig a whole i guess, where it easier to hide behind rocks in the mountains which would support scouts in the mountains which have higher view range.
all in all this would enable the bandit style , attack, then run and hide