The 1:1 transcode with degregation to SD content and the lack of import on the secondary DVR is the issue. At that point, you might as well buy a Synology Diskstation or other service aware NAS and establish a DLNA server on your home network.
Short answer, for most people it ain't worth the trouble. If it is worth a single transfer, move it to DLNA and save yourself the trouble of future transfers.
Or if you want to go grey market, setup an Synology Diskstation and use download manager to download torrents for movies you already own in background with low QoS settings.