>>10181051>Cream hasn't appeared or has been playable for a long time.>Therefore, she's not important to the series.Sonic X, Sonic Heroes, and Generations are staples in the franchise that influence the series to this day. Cream is still very popular in Japan, far above Emerl, Mephiles, and Infinite who got dolls of their own.
The only likely reason Cream hasn't been made, was because it's hard to sell female action figures in a boys toy line except for Rouge the Bat for obvious reasons. She still the 4th most popular female after Blaze, which is why nobody has forgotten her.