So MXPlayer will not work on local network content unless a auto mount patch is used? and in that case, wouldn't a complete re-scan of the library be required?
Rescan what library, KODI? If yes, than I guess so.
I would like to migrate my Library from SMB to NFS share (all the same, even the folders name), but I guess it's impossible without a rescan.
For auto mount patch: I didn't tried, but I guess you don't need to patch it. In the case of NFS Shortcuts you make in Media Center the main folder is automatically mounted to mnt/nfsShare/nfs_share0, wheres the number on the end may wary by the order you created the Shortcuts. And if you named the Shortcut's folder like "Videos" than the full path would be: mnt/nfsShare/nfs_share0/Videos. You can't browse that in with KODI, so you must enter manually. I guess its quite the same in the case of SMB, dig it up with a File Explorer how that folder's being named (I would guess smbShare/smb_Share0, 1, 2, etc...).