Data -null item- handling - inconsistent!

Hallo,

maybe this was discussed earlier but:

It would be helpfule to introduce some kind of consistentensie how components handle data.

i.e.:

a)

crafting a null item will generate a new null item;

others like mass addition will convert it into a plain 0.0;

Shatter will change the path indices of successfuly shattered lines different the with null items.

b)

transforming  a empoty list will produce a null item

crafting a datatree with empty lists will erase the list with the path

...

thx

Richard