Command interviews and courses tend to be more geared to what I call non tech attributes. You obviously have a large number of hours and experience to be in the position to be considered for command. I have found in the past that command assessments tend to concentrate on the following:
1. Co-Operation
a). Team building and Maintaining
b). Consideration of Others
c). Support of Others
d). Conflict solving
2. Leadership and Managerial Skills
a). Use of Authority and Assertiveness
b). Providing and Maintaining Standards
c). Planning and Co-Ordination
d). Workload Management
3. Situation Awareness
a). Awareness of Aircraft Systems
b). Awareness of External Enviroment
c). Awareness of Time
4. Decision Making
a). Problem Definition and Diagnosis
b). Option Generation
c). Risk Assessment
d). Outcome Review
Hope this helps.