If you're rooted, you can change the identity that the tablet reports itself as to one on the Netflix accepted list can't you? I know it's been done a bunch of times in the past in order to get Google Play Store working on other Chinese tablets... At least that seems to be what Hackerjac was inferring? But, I guess you'd still need the required DRM mechanism/files installed.
I don't think changing the identity reported will work as the DRNM libraries I believe are missing. I didn't realise the gapps package included DRM libraries. I don't think it's as easy as using ADB to install a gapps package, but not certain. I thought the Hi12 has dm-verity which means if you do an "ADB root" and make changes to /system the tablet won't boot. Is that right? Otherwise, how do I go about installing gapps on a stock Hi12? (I have the 8350 CPU version). Help appreciated!