All ideas are welcome. Just because the Idea doesn't make it into the product immediately does not make it a bad idea.
If you create a vew in the SRCXXX snapshot database, you then need to import that view into the SRCXXX datasource so the system has the necessary metadata related to that view. The mapping screen references the tables and columns from the Datasource Metadata, not from the database directly.
You won't be notified about changes to this idea.