Hi
Like how the game is coming along, it is good that it is so stable.
Two suggestions
1. In stacks make it so you have to click the leave icon to make a unit leave a stack, its very annoying when you look at a hero then click for the stack to move and just the hero moves.
2. Merge the archery techs into the normal weapon techs. So archers can be made from the beginning and the bows get harder as weapon techs are taken.