Pros
Only place I've worked that was overstaffed, which means having a sword of Damocles over your head... and the free fruit was a pro.
Cons
MUFG attracts two sorts of people - good people following the money and incompetent people who play at politics. The good people quickly realize their mistake and leave, leaving the incompetent people to flourish. Interactions with Tokyo are in a similar vein - they have no clue how to run a bank so you spend a large part of your day explaining things to people more senior than you. Promotions are only available to those who play the political game. They introduced "values" while I was there but it's all just lip-service. Still, working in the London office is a walk in the park compared to what I hear the women in Japan have to endure...