We need to be a little patient with this model.
Many devs prefer technical complexity to social complexity.
Asking them to participate in a continuous job interview is asking a lot.
I expect that those of us who enjoy interacting with people are going to have to pitch in and help them out a bit here. Bytemaster has told us who he would like to have on his team. He is very, very, very picky.
If we want BitShares to succeed, we won't ask alpha-geeks to perform unnatural acts.
You do realize this is antithetical to the entire premise of being "hired by the blockchain"? In other words you are implying that it is impossible for stake-voters to accurately quantify the value of prospective hirees (because it is an "unnatural act" for devs to effectively market their services to the stakeholders).
No, it just helps define what that has to mean. If the block chain wants to employ the people it needs, then it must adapt to find a way to employ them.
We are in a phase where each delegate slot funds a part time employee, so to get a team of employees with all the right skills (including the ability to promote their own contributions) you need to have delegates work together to fill in their respective strengths and weaknesses.
Eventually, each delegate will be a small business. 101 teams. Each team will be a mix of skills, presumably centered around someone who is able to represent that team's capabilities to the stakeholders.
So, until then, you may have to take the word of one trusted delegate about the contributions of several others she is working with.