Add copy token when Sage of the Skies is in decklist

Currently when I add Sage of the Skies to a decklist, it doesnt add a copy token to the list of tokens created by that deck, even though Sage has an ability to create a copy of itself. Associating the copy token with Sage of the Skies would be a small but helpful quality of life improvement for Standard players using Moxfield. Thanks!

Would the token be for the deck list or for the playtester? (I ask since you said it would be a quality of life improvement for standard players)

I noticed the issue in the deck list or deck editor UI, I dont know about the playtester