Post the link please, but I do recall someone somewhere back did sign a package but would not get it to pass, phone was verifying the signature. Maybe that's who you are thinking of.
We can't sign a package ourselves and install it (custom ROM?) Because the public key the phones have from ZTE will not verify the signature. We need a custom recovery to flash any darn file we want. To be able to flash recovery we need root basically. We need to builda custom two and we need access to the phone to do that. Some people mentioned they wanted to try some twrp that they never specified where it came from. Right more we can't even flash if we wanted to, but be careful people if you somehow try to flash some twrp not specific to the phone you can do serious harm
looks like the community has tackled a good group of things you would otherwise need root for, so the device is great even without root, worth the wait if you ask me, or you could downgrade to a smaller less powerful device (metro). Gaining root is going to make this phone incredible, one of the best at metro even without root so im sure we can all imagine 
