I'm amazed to hear Robbie is still grading out at 0.0 this year. That's what Adrian Beltre's arm and squeaky clean play will do for you.
Personally, even with the glitzy cool and the position adjustment, it hurts me a little to watch Robbie play defense these days. So often someone hits a three hopper towards a hole or up the middle, and I go "okay, that's an out... oh no wait, Robbie didn't get within three feet of it." He's just painfully slow for the position. I'd put the over/under for his transition to 1B at Spring 2019. I'm not sure I'd take the over...
On the other hand, you gotta appreciate that he's managed to stick at 2B for so long despite being the wrong build for it. Very cool to know that if you took a Gold Glove 3B and made him play 2B, it'd be possible for him to fake it based on reflexes and throwing arm alone.