Pros
Got to work with some really smart people. The benefits are also hard to beat. Used to be pretty light on process which meant delivering value.
Cons
Smart people have left. The CTO has layered on so much process it is almost impossible to get anything done. Valuing documentation over working software. It's has been months if not over a year since a new feature has been delivered on a project that was releasing multiple features every 2 weeks. The CTO bullies and intimidates his subordinates, threatening them with there jobs if they so much as offer a different perspective on a technical matter. This has all impacted negatively on the quality of the the product and can all be traced back to a year ago when the CTO first got involved. Furious that no one is doing anything about it.