Such information is hard to acquire from the outside looking in with limited contacts.
My personal opinion is that Pilot, WSO and even WSOp are strong careers for the foreseeable future as well as Observer in the RN.
At worst one could argue that a 12 years commission as (in a perfect world) a FJ GR4 WSO with 2-3 frontline tours will be a good (but shortish) career.
I believe it would put a person in a strong position to move into another branch, command, QWSI or even off into the civil aviation sector.
At present 38 (Pilot) for me is only 1 year more than the WSO commission and buy the time I could potentially enter they will equal out.
Surely there are many more negatives that positives still for these profession?