Can we get some UI/ API support to fetch all reports and segments a perticular variable is used in or a list of all variables used in a report

Hi, 

We are planning to make some big updates in our SDR and that would include changes in a lot of variables for the data points currently tracked. We would need to update our workspaces (and we have a lot of them) and other reports accordingly and we were thinking it would be good to have way to :

1)           identify all Segments and Projects various variables have been used in? Can we somehow get a relational list linking Segments and Projects as that would make it easier for us to make the required updates?

2)           get an automated extract of all variables used in any given Project?