If the space in a mass field were Euclidean normal to non-mass space due to time dilation it would take more time for light to transit it per the external viewer.
It would make light speed inconsistent depending on whether or not it had passed through one or more [of the 'molassas' of] mass fields.
Long time & long distance would be inconsistent.
Long ago and distance away per light would be inconsistent depending on intermediate mass fields it had to cross.
The light 'yardstick' we use would be[come] un predictable.
It would violate a fundamental tenant of relativity.
It would make light speed inconsistent depending on whether or not it had passed through one or more [of the 'molassas' of] mass fields.
Long time & long distance would be inconsistent.
Long ago and distance away per light would be inconsistent depending on intermediate mass fields it had to cross.
The light 'yardstick' we use would be[come] un predictable.
It would violate a fundamental tenant of relativity.