Media Library ON FOR INTERNAL, OFF FOR NETWORK/EXTERNAL?

Is it anyway possible to keep the media library ON for the internal storage, but OFF for external storage?

This would be nice, when plugging in and external drive just to copy some files over on the hub. Right now it is a bit annoying that whenever I plug in external HDD the HUB starts indexing for the library…

No its either on or off. I do however agree with you.