...then starting on a career average scheme at a relatively high starting salary with future incremental progression available
Yes, but that's all hypothetical at the moment.
We don't know the time-frame that the career average will be bound by - from 2015 for actual career including pre-2015 service.
We don't know that it would include an incremental progression from 2015 like AFPS75, or more akin to the AFPS05 scheme and it's rights.
We don't know what the PAS rights on PVR would be as the JSP can't reflect an AFPS that hasn't been issued yet.
Too many unknowns. I'd wish those on here would stop hypothesising on an system that has yet to be finalised and announced...unless, of course, you know something that we don't?
The online calculator is great for what we know, but i fear few will make a decision based on that many unknowns, unless the FAPFS is issued interfrastically.