Would be nice to have an additional section/tab in 'Configuration of templates' and 'Configuration of hosts' where the complete hierarchy of linked templates gets visualized recursively.
Maybe with an option to show recursively the paths from objects that refer to the template (except hosts) as well.

This could probably even make 'Linked templates' and 'Template' columns in list of templates resp. list of hosts obsolete.

Might be another use case for D3.js