I know I might be thrown heavy ordnance at for saying this but I will anyway.
During my aptitude at the German AF I've had the pleasure to meet the head of the AF psychological dept. in person for a three-hour interview to talk about every bull**** you can think of and he told me that they suggest to some applicants with outstanding skills and test results (he referred to the top5% of the 2% of applicants that actually get the go for flying training) that they do not join the AF if they are prevented from taking the FJ route for medical reasons. He said, both multi engines and choppers might not give these high potential candidates what they need, leading inevitably to job dissatisfaction.
Might that ring a bell?
Barnstormer