Can you add graph enable/disable functionality (similar way as it is done for triggers or items), which would prevent displaying unwanted graphs in dropdown menu on a graph tab?
On most of network devices I'm working with (routers, switches, cmtses) there is always lots of different phisical/virtual interfaces, which are being discoverd by lld rules. Same rules create graphs (ex. traffic) for every added interface. Usually it is a very inconvenient to find desirable graph, since there are no graph filtering options, search engine doesn't support finding graphs and dropdown menu is flooded with uneccesary graphs.
Using LLD filters to add only wanted graphs, in my opinion, is not an option, because, propably in the end, it would come to creating huge regexp matching only particular graphs.
Not showing graphs built on disabled items is not a solution as well, as ,for example, there can be a need to have an access to historical data on the interface, which is not used anymore.