I assume the turn off is partly increased work-load, partly that you're then much more moveable/postable, partly the increased chance of a non-flying job (with it's pay-cut) and for all of this you're getting a pay rise which is pretty much a slab of
VB after tax!
Why not just kick back as a FLTLT and keep flying? And many people have, but obviously that's not working for the organisation hence the rumour of the better aimed retention package and also the next promotion board looking at everyone in the pool.