Not long ago I installed the latest version of a client. I did not want to do anything, send or recieve bays or anything else. I did it just to have a look. And I gave up downloading the blockchain, it was too long and on the next day I simply forgot to resume.
I think many of potential users, especially common byers and sellers will behave the same way. We need lite client!
And as I said earlier, user friendly beautiful interface that will look like Alibaba or Ebay would be great. Preferably web-based. I understand that it takes time and hard work, but maybe just announce these two things as a next big goal?