NFS Device Statistics

I'm currently working on validating a new vSphere 5.1 environment predicated on 10Gbit NFS.

When I'm using resxtop I can see the device statistics for the NFS volumes (CMD/s, READS/s,WRITES/s, etc.....GAVG/cmd - obviously not DAVG, KAVG or QAVG), but it appears that IO analyzer doesn't capture these, only showing me the device statistics for the local storage in each ESXi server.

Is there anyway of modifying it to display this data, or can I submit a feature request for a future release?

Thanks,

Ben