Happy to see a CTO promoted to CEO, hopefully a signal that Twitter is still committed to growing/incubating the engineering side of the business.
see /r/twitter for a summary of issues people see on a day to day basis.
https://en.wikipedia.org/wiki/Peter_principle
edit: I think I got it wrong. maybe this is a closer fit:
https://en.wikipedia.org/wiki/Putt%27s_Law_and_the_Successfu...