Maybe it will not make certifcation and maybe it will. Who knows. The amount of aircraft engines that don't out weighs the ones that do.
How ever time will tell.
But still what is the max crictal alt that this engine will restart at.
Is the engine boosted from sea level or is it just normalized to alt.
you can't just put up a statement if you don't know what it performance is !!!!
Examples of turbine was to show that they can't be started at alt ether. Not many pistion engine aircraft get up of 25000 feet.