please don't forget, it's just an editor screenshot, not a game. things are approx. in good scale, but there is a scale slider. maybe hard to see on this image the 3d distances... I decreased sprite resolutions today afternoon, and it has a sensible effect on speed.

shrubs are not passable, I mean the sprites itself are passable, but each plant gets a collider entity, by default a cube, but if you load it in your game you can change it by script easily to any shape.

in my pathfinder, what I plan to adapt to more game types, heavy units (like vehicles or tanks) are already set to be able to go through shrubs, while infantry and cavalry are unable. once I need to implement smoothed vehicle movement (I have the reference material for it that suits my system)...