To attract devs we need to be sure we can support their projects financially, I noticed there's open sourced postpromoter but no open sourced reward sharing through delegation, that would enable anyone to open their project for investment.
First we need to make people aware of Steem, then offer them all the tools they could want to make their business here easy as possible to setup. But as you said, project like Ethereum has and will continue to have gravity like pulling force for new devs entering crypto.