If it were, this proto-Declaration would be considerably harsher than the RL 1948 version, and if this Declaration were then (even slowly) to gain acceptance as presumably you are hoping to see, then it's not going to deviate much as there will be a trend to view it as the epitomy of rights - it will probably go some way to dissuading people on becoming even softer. For instance, this Declaration would probably do things such as codifying men as superior to women (if not to the extent of controlling them), enshrining the death penalty as acceptable for crimes such as stealing, will probably bring about an attitude that the workhouse poor deserve the situation they are in, and should be pitied but shouldn't be artificially given money to help them out of their situation, etc. It would be interesting, but it might well go some way to preserving Victorian-era values where otherwise they would have continued to become more liberal.
Just my take on the matter, of course.