With current trend on reducing manpower tax and HR streamlining jobs scope and other functions. They can't create too much positions to suit all. Uniformed services, not 2 B can guarantee you a promotion already, same applies for MX scheme. If you still rem the OCC new promotion criteria guideline. There's one component that your bosses and other management must think or support that you are ready for promotion to take up higher responsibilities. If you kena arrow by other Dir or not support then becomes hanging unless your boss really fight for you.

Another possibility of getting promoted other than your leadership or ready to take higher role is hitting your ceiling and YOS (year of svc) due for promotion to match your next bandwidth pay scale.