So right now my game doesn't use textures at all, only vertex colors. However many things would benefit greatly from texturing (e.g. vegetation, clothing). Adding textures means

1. Higher engine complexity
2. Much higher content creation cost

(2) is my major concern.

Anybody got any opinions/advice on this?

@lisyarus Keep it without textures if you don't have the production capacity, but invest in lighting. 3D without textures but with good lighting, whether it's real-time or baked, can look very nice.