If the CP4 pump was designed properly, it would have been an improvement, but it wasn’t.
I have a tractor with a CP-4 and it runs awesome (so do lots of other AG tractors). 9500 AG hours and no issues because its fed fuel properly by its supply pump.
Of course nobody knows, but if the CP-4 is redesigned properly, and fed fuel so it won’t glitter bomb, it will be capable of more injection cycles at faster rates. Diesels will run smoother, quieter and more efficiently.
Lots of ifs, but we shall see.