Those who are currently FEs will always be FEs, The new guys may be called something else. I only think this model will work on the J Hercs and C-17 and maybe the new SAR A/C. The Helo guys take a lot of time and effort to upgrade I don't think it would be wise to send them back to the floor after getting them up to speed flying. Perhaps reversing the current progression format might work, start on a J Herc and then progress to the Helo world. Start off as a servicing/ "C" level release guy, help the loadie when he needs it, but with none or very limited inflight duties. After some time on the heavies you could move onto the Helos for some real FE work.
Time will tell, and as long as we have CP 140 and the E/H Hercs we will still require FEs