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There are some graph theory commands (TravellingSaleseman[], MinimumSpanningTree[]...) that uses ueclidean distances. These are nice for some demonstrations, but you cannot enter weights of edges. In an old thread there is a note that this was in the pipeline for 2011... I guessed it was dropped.
Are there any plans to put this back into the pipeline? Graph theory is actually taught in the top upper secondary math courses in Sweden.
I like this idea 
Sadly it is about to be dropped from the UK advanced maths courses, except as an option choice for those taking additional maths courses. I always enjoyed teaching it, but without weights the GeoGebra options were not much use.
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