I'd like to see the design of the new compressors.
AFAIK a defective compressor can contaminate air.
In the current system the air DOES NOT pass through the engine. It is bled off the compressor several stages before the combustion chamber. Contamination may take place typically if the forward compressor bearing is leaking lubricating oil.
Will the new system have separate compressors with no forward bearing? Could be done - in fact it was done in the days of radial compressors.