In terms of high-level features, the Nikon D80 finds itself a bit shorthanded: it does not have stabilization, like the Sony Alpha A100 and Pentax K10D; it does not have dust-reduction features, like most of its competitors; and it is not weather-sealed like to Pentax K10D. In terms of subtle features, like image parameters and control customization, it has plenty. Important ones are control over auto-ISO behavior, control over noise reduction, customizable metering and a large number of image parameters.
As for noise and softness, the Nikon D80 trades the former for the latter. This is a universal compromise to make in high-density image sensors. As such, the D80 produces images softer than any other DSLR. On the other hand, apparent noise is less than that of the Sony Alpha A100, which uses the same sensor and was criticized by its un-DSLR-like noise levels. In practical terms, the D80's images will appear better for small to medium size prints (8"x12") but large prints will be noticeably less sharp.