It would be nice to see what each item weights and how much a person is able to carry. Currently the encumbrance allows for a general idea, but different people have different encumbrance due to the points spent in strength and fortitude. Knowing weight would allow for better planning and arrangement of resources in baskets and for scavenging.
Personally I am content with the weight system we have now, the less numbers the better :P I can see how it could help, but... meh. If every item showed a weight value as well its just more clutter on my screen tbh. Not that I feel strongly against it or anything.