I would just say that if someone loves the OT and just wants more of that then R1 isn't going to make them happy. Honestly TFA is as close as you're going to get to "more OT but make it fresh". R1 is more like Star Wars through a completely different lens. Also digital Tarkin sucked. Had they just hired Charles Dance, the Tarkin scenes would've been 1000% better. That was as big a miss as not hiring Haley Joel Osmet for TPM.

But if someone loves the Start Wars universe and just wants more interesting things within it, then R1 is the juice. It's recognizably Star Wars without being too familiar or a rehash of what has been done before.