If you could make changes, how would you improve the culture at Principal Financial Group?

The company is difficult for mid-career professionals to join and stay. The root issue is (I surmise) that the company has only one monolithic culture that emerges out of extremely long tenures (diversity is interpreted very narrowly to mean "protected classes" rather than diversity of experience at other companies). New people get ignored, even if they have 20 or 30 years of successful experience in other financial services companies. It's a pigeon hole culture with limited movement of executives and their direct reports. I know I'm a high quality employee, because I rose through the ranks at my previous employers rapidly. However, I feel very stuck in a small box because few people know me or my abilities, and apparently it's not an expectation for managers who've hired from the outside to help mid-career new employees make good connections. It's frustrating.