#7 Sareee
A highly-skilled 23-year old wrestler with eight years of experience already under her belt, Sareee began her career with the Diana promotion (headed by the legendary joshi Kyoko Inoue, who once wrestled in WWE) before spending years wrestling for Nanae Takahashi's Seadlinnng company.
In September, Sareee left Seadlinnng. Not long after, she reportedly met with Paul "Triple" Levesque, which caused some fans to speculate that she was bound for WWE. Sareee has since clarified that while she is interested in WWE over the long term, she currently wants to stay in Japan.
Signing an impressive talent whom WWE has their eye on could be a good idea for Stardom. It could show that they can be competitive and retain domestic talent instead of always losing them, as they did with Io Shirai and Kairi Sane. Besides, Sareee's in-ring abilities and aesthetic appeal would make her perfectly matched against Stardom names like Tam Nakano, Konami, and Saki Kashima.