I read some highly interesting stuff on F414, namely that the difference between the EDE & EPE was merely adding a couple of compressor blades,
which means you could use that dirt cheap EDE (extended durance) regularly,
and only add those performance boosting stuff (EPE -extended performance)
-if and when push comes to shove

Had GE self funded the development of EPE to be made available by now, they might have broken even with orders for Tejas-2, Gripen NG and FA-50.