just added this:
I think a website should be a reflection of two things:
Where you're at as a designer - something that showcases your work in the best form for that work. If you're print, the form should be simple and portfolio in nature, If it's web, it should practice what it preaches
and validate/
seo etc...
The needs of your audience. Do they need another designer or by shifting your work into a different sphere, can you indicate your point of difference? In terms of form, do you visitors stay on the current site, where do they go. The best form of strategy will lots of web things is trials. Try something out, even if its on a linked in 'new page' and get feedback.
Take facebook - the new design is a massively new step forward, but many are unsure because they are so used to the previous version BUT this new version if perfectly fitting for the audience...