Connect Designer - Satellite modelling - disable object creation

With the latest releases, new possibility was introduced to Connect Designer to maintain relationships to satellite objects easily (Content type management / Satellite modelling), similar to Contribution functionality from the Connect Viewer. Unlike the contribution however, there is currently no way to prevent the user to create a new object definition when creating a new relationship/mapping.

Please enhance the settings of this feature, to be able to disable the possibility to create definition, so that it is possible just to reuse existing objects (from libraries).