How does this weaken mulligan when there are double the 1-cost minion options? You really feel like the standard aggro druid decks that only takes two or three 1-cost generally has a better mulligan? (https://www.hearthstonetopdecks.com/decks/aggro-token-druid-early-18-legend-wuling-castle-nathria/)
Being able to take every low cost tokens(not having to choose between mark/power of wild) and draw-cards literally gives you more board preassure.