My Organization uses Classic to run most of our operations because NXT doesn't yet have the functionality we need to fulfill all our roles. Having Queries and Dashboards viewable in NXT would go a long way towards making NXT really functional for us.
Not sure if it's possible, but a snapshot of RE:7 Dashboards available in NXT might help a lot of orgs until the point when NXT provides reporting that is flexible enough to replace them.