"Headcount reduction needs to be at least 10-15%"
That's GE thinking and why GE has failed.
In broad categories there are two groups in GEP. One group needed to maintain and sell the current fleet. Given that parts revenue is way down, there don't need to be nearly as many as those, guess a 20% reduction now with more reductions to follow. The second group is the group needed to field new products. They want to be smart here. GE is slow in fielding new products, too conservative in it's known risks and makes mistakes with it's unknown risks. The culture is all wrong. Wrong in 20/20 hindsight and no sign of being right going forward. What to do? Kill it now? Maybe. Depends on a gut call by the new boss. My guess is that he'll either put an outsider in charge or merge it all into aviation. Dealer's choice.