The scale of colonists in My Colony vs the size of buildings/rovers/etc has long been a joke, but coming soon to My Colony 2 v0.19.0, the joke may be mostly over. Support has been added to the Scroll 3D engine for rendering Voxel models at different scales, and as a result, the Colonist (as well as the Infantry unit) has now been scaled down to a more realistic size VS the structures and vehicles in the game.
This change comes in addition to another new feature that will let you click on a colonist to take control of him, and then walk around your city and check things out from the colonists' point of view.
There is a lot more coming soon in v0.19.0, so stay tuned for more updates!