I do love your game and what if the giantess girl was bigger then the city or maybe bigger an mountain for her to use and that would be interesting to see.
I thought carefully about how tall the giantess should be. And there's a reason why I chose amazon size as the default. Units should be recognizable from an RTS player's point of view. If you have a mega or giga-sized giantess, most units will look like ants. This can be a problem, since the game was originally designed to fight with allied units.
But if you only control just one unit, like League of Legends, it won't be a problem. I'll put it on my to-do list.