Pros
There are some very intelligent people at Key, especially on the Capital Markets side; as such it can be a great place to learn from more-seasoned colleagues. Good benefits, generous PTO policy. Strong balance sheet. The Corporate Bank is trending in the right direction and improving reputation.
Cons
As is the case with many large companies, the work environment is largely dependent on your specific group or department and manager. There are some fantastic leaders, and there are also some incompetent ones; in the latter situation, it can be extremely frustrating. I imagine this is not a unique characteristic. Senior executives seem to lack the ability to plan effectively for the future. There are many corporate-wide initiatives that either die quickly, or last a short while only to be reversed completely down the road. An example is the branch network: a few years ago there was a large push to open branches and increase density within Key's footprint...in 2013, many branches are closing (some that were opened in the last 12 months) and I'm guessing a lot of money was wasted in the process. It seems like things are constantly changing- it comes off as "figure it out as we go." If you are not based in Cleveland, it is very difficult to advance your career or move laterally within the company (I can only speak of the Corporate Bank in this regard).