what problems might you face when modeling the sun and the revolving planets to the same scale? what assumptions might you have to make in your model

If someone is trying to make a model of the solar system, and the goal is to represent it as it is, scaled down of course, then there will be one very big problem. The problem would be exactly the scaling. The Sun is significantly larger than any of the planets in the solar system. While the planets like Jupiter and Saturn can be represented by suing the same scale as the one for the Sun, that would not be the case for the likes like Mars and Mercury. The reason for this is that Mercury for example, being the smallest of the planets in the solar system, has diameter that is just over 285 times smaller than that of the Sun. Considering that in order for the model to be practical, the Sun will be made to be very small, it will be almost impossible to represent Mercury as it will be incredibly hard to even notice it. This is why in practice, when the solar system is represented, the scale used for the Sun and for the planets is not the same, so that the planets can be seen properly, not be just very small dots.