We already discussed around this topic (mainly regarding the future of NagVis). There are some options, we could think of. But as of now, we do not have any specific plans.
For Grafana we will enhance the variable-feature, first. Next biggest request has been the handling of states in Grafana.
For Checkmk/Nagvis we’re looking for an intermediate step. See also the suggestion on our ideas portal: https://ideas.checkmk.com/suggestions/297385/give-nagvis-a-proper-facelift
So, in summary, it’s currently not possible to use long/lat information in Nagvis.