I it is true : I was very agressive on this one. But still, thousands and tousands of triangle feels like so much overweight for me. Specialy for indoor scenes. Quality for the eye is a lot to do with texture, NOT the number of triangle.
And I do not even talk about the GPU work to handle those thousands of triangles.
With 300 points, my scene runs quick&fast even on budget Smartphones ! This is an important issues I can tell you. A video game that runs on all devices ...