adding data to layer 0 instead of NOD will not solve the effect wblocking has on things.
The fact is, its easy to leave behind NOD data if you wblock all to a new drawing.
If I were you, I would put in the NOD, and also have coomands to export to text file and import in, because life in the dwg world does require wblocking all to a new drawing here and there.
If you have users smart enough to get rid of NOD data, or careless enough that they do not understand wblocking a drawing out does not bring the data, you have bigger problems.
I've done "added data" so many ways now, I know exactly what approaches work and don't for a set of issues, so describe what you are worried about with using the NOD.