Draftss is a productized graphic design service on a subscription model. We have a team of graphic design experts with 10+ years of experience who can provide a detailed feedback in the design domain that can be valuable for startups and businesses. Would you be interested to pay for such a service?<p>Website URL: http://draftss.com
There are a lot of online communities where you can ask for feedback. HackerNews may one. Because of the free feedback, such services may only work if there is more than just feedback. On the other hand, many companies have their own graphics and web designer, so they won't need feedback.
I like your idea but as was said before, it would only work when you want to focus on special groups. You should think about offering just a few features for paying customers and the rest is for free. You could sell advertising on your website to cover the costs.
No, I wouldn't, unless I was somehow building a product that exclusively targeted highly experienced graphics designers. And then, if I had to pay them, I'd scrap the startup before I paid because it was clearly a terrible idea.