Swanie, if you want to get into Airline Management, you need networking skills & more suction than a Hoover! I wouldn't bother.
However, I would still do another degree/diploma whatever. If management is your "thang", you will need these. The PIC as management won't cut the mustard I reckon. Sure, it will help and I agree that there are many people skills that you will utilise in this role however, they will cut you down with "
What kind of performance management did you employ in the PIC role?" and "
What size budget were you working with?". Those are the types of questions that will negate the "management" skills a PIC possesses, if that is your only leadership role.
After Ansett fell over...(queue violins)
...the Diploma of Management helped me get on with a career away from aviation however, it's been a bit of a slog as you have to start at the bottom & work your way up. What also helps is cleverly translating what you have done in the airlines into words that reflect real world terminology. I am still just shy of where I was income wise after the collapse, to give you an example, but I'm on the way.
Bottom line, in a nutshell, at the end of the day...(pick your favourite)...I would do the course, but not as a means of climbing the aviation food chain, I would do it as a failsafe for if things go pear shaped in your chosen line of work.
Go get 'em tiger!