It is said that one great coder is 10x as good as a mediocre one.
Biblepay follows the benevolent dictator model (1 main dev) which generally leads to some of the best projects (software development).
One of the main reasons that I've always supported this project is because I believe in Rob's abilities and vision. Because at this point we have only one main dev, we have had the ability to be swift in our development (something that the past months also have shown).
Having said that, I think that in the long term we need more developers that have understanding of our source-code (which I think Bhavani is working on at the moment?). So that, should Rob disappear for whatever reason, the coin will keep it's vitality.