Leadership Improvements - Enlisted, NCO, and Officers/Warrant Officers - Name One Area of Improvement & Why?

Not just getting back to basics or technical and tactical skills; getting back to the basics of developing better people!
Better people = Better troops; better husbands/wives; better students; better employees for NG/RES personnel.
You can't yell, "Jump higher!" and expect that to happen.  Break down the fundamentals to train on individual task - if its tactical or financial readiness of troops. 

My one thing would be for Officers to understand Talent Management and the value of the NCO Corp with that. Now, as I say this, I know the NCO corp in my branch needs to start showing it has talent to manage.

If you look at the career path of the Officer, at every Key position the Officer is given a NCO for mentorship, experience, and execution. It is not until the BN command level that the NCO to Officer experience ratio starts to even out. Officers need to understand the value of that experience and empower their NCO partner to make their lives easier. A properly empowered competent NCO is a force unto its own.

I know others will hit the usual areas, so I wanted to add an unusual one....Interconnectivity. By that, I mean learning more about how your decisions when accomplishing your assigned mission and leading your people affect other aspects of that mission. Great that you earn the decoration for being the best at what you do within your community, but how did you efforts impact other units and the overall mission?