Your reference to certs piled on existing, are you referring to the TRENT FAMILY?
Sistering specs and expectations for a functionally different powerplant? Gads, not again?
Your reference though intended I suppose to point to an aberration, is evocative of the fallacy that caused the TRENT failure.
Scaling up thrust by scaling up dimensions is a fool's erand, as you eloquently point out, though perhaps inadvertently.
chee ahz...