Pros
If you are in the "product" organization or a middle manager or above, you are probably paid well. Most employees are good people and easy to get along with, especially individually. Given the big bet Expedia has placed, there is significant runway for big bets and failure.
Cons
The company will now live and die based on the new CEO. To say he is hands on is a vast understatement. The monthly review format is a massive time and energy sink that almost certainly does more harm than good. The "120 process" supposes a flat company structure but the company is very hierarchical and will be even more so when thousands are hired in Austin. There's no real reward or incentive to contribute. The actual website(s) are still a mess. It's very rare for anyone to rise through the internal ranks even if they are a very strong performer.