I know a lot of the early history, I worked there when we hired both Jack and Biz. I can tell you that it's a really good thing that Biz is back on board. Biz was able to articulate what twitter was as the human voice of the company in both directions. From day one the question was always, what does Biz do. Biz bounced around but when he was there things were better. Kind of like the basketball player that Nate Silve…
Since you were too humble to mention it yourself, I thought I point that out to those folks that don't know who you are so that people know your opinion definitely has some weight in the matter. :)
Anyway, interesting that your basic point of Biz was that he was an everyman but I posit that while it may be a good role to have in a startup (with all the internal dramas and such), it may not work in a "corporate" environment given that Twitter has thousands of employees[2]? I have been working for more than a decade and have met my fair share of "everymans" but it is my personal anecdotal experience that these guys usually get shredded in the politics of the corporate world. More so considering that apparently Biz use to get on the nerves of Jack[3]?
A jester can be loved by the king in his court but the minute the King finds him annoying, not long will it degenerate into an off-with-his-head scenario.
Given your intimate knowledge of their relationship, I am curious what are your thoughts from this perspective.
[1] https://www.amazon.com/gp/customer-reviews/RM8TBPRZ1490F/
[2] https://about.twitter.com/company
[3] http://nymag.com/daily/intelligencer/2013/11/twitters-founde...