I have some ideal about insert some rebar imformation in family. It's usefull for precast component family.
In family we can insert some lines represent for rebars which we want to have in component. We can set these lines invisible in medium and file level detail so it won't affect to much to all model. After that we will use rebar form curve node to make these line to rebar in Revit evironment.
Here the example I will use for my company. Do you think it usefull?