Even I would agree with
@facethereality and others here.
Telling those below 450 to just 'hold on' is not something we should be doing here anymore. Below 450 range is not safe. Those with scores below 450 should be fighting tooth and nail to increase their CRS.
And further, to say that the scores would be in 440s during the next year is even more unrealistic. That is not a logically sound assumption. The facts, the ones we have till now, speak otherwise.
Now I am not discrediting you. It may be so that CRS actually falls back to 440's (anything is possible), but since such an outcome doesn't look very probable anymore, people below 450 must start exploring PNP routes and should try increasing their CRS.
They cannot just 'hang on'. That would be the biggest folly on their part.