Thank you for your feedback. It's really important.
Deselect troop placement should be the escape key.
The menu won't show even if you select a single unit? It should not show up on siege units, ranged units and buildings.
Yeah, really good idea. I will think about adding this to the game.
To investigate the unit panel problems, I have 3 questions:
> Are you using Mac OS?
> Which screen resolution do you use
> Can you try to place just one melee unit and click on it, that should bring up the menu for sure :D