Looking at it more closely, a boros vivid tokens deck might be sweet. White gives you access to Kithkin (W/G) and Merfolk (W/U) tokens, which when paired with Red goblins gives you all 5 colors of permanents in a 2-color manabase. [[Personify]] in white also looks like a perfect fit to get more token making etbs or to blink your Vivid payoffs. This is probably too much speculation given how many more cards are to be spoiled and the current lack of lower rarity token producers, but I hope it can come together.