I like to be tidy, I therefore like to delete obsolete designs. Each time I try to delete a design I get "A version of this design has been referenced by drawings or other designs and cannot be deleted". I am the only person accessing these designs so if I want to delete them, regardless of the consequences I should be allowed to, leaving obsolete designs on the desktop can lead to a wrong issue being used.
Alternatively allow easy access to the referenced versions so they can be deleted correctly.