[aryastark]

Unity has probably one of the best UIs I've seen. I also use Blender, so I know how complex UI can get. But with Unity, they encapsulate everything into game objects and components. That's it. It really can't get much easier. Even their animation system is sensible and fits nicely with the overall architecture. I was up and running within a few days. In a week I had what could arguably be considered a working game. Watch a few youtube videos and you'll have working cloth, triggers, and particles.

As a programmer, I still have not reached the point of feeling that I lacked control over the game and engine. And I doubt that easily happens with indie developers, as Unity is incredibly well-equipped to deal with small-to-medium sized games.