I agree in principle, most of the time. Consider though, certain sites will require good design from day one. A 'totally rough' site would not give you the credibility you need to even get started and acquire customer #1.

The MVP mantra is valid, but cannot be applied in every case - especially when your core product involves good design or aesthetics.

Sites where a rough MVP v1 would not work, IMO: http://sortfolio.com/ http://dribbble.com/ http://www.shopify.com/ http://www.weebly.com/

I am interested to know about "..you should have a list of designers you've already identified..." i.e. any HN'ers care to share their lists?