#1 Should not happen at SummerSlam - Bayley & Sasha Banks vs Asuka & Nikki Cross
The biggest issue with Sasha Banks and Bayley holding the WWE Women's Tag Team titles as well as both the singles Women's Championship of RAW and SmackDown is that the tag titles are almost an afterthought. There is no real rivalry for those titles heading into SummerSlam, which diminishes their purpose.
This past week on RAW, we saw Bayley attack Kairi Sane, forcing Asuka to leave her RAW Women's Championship match to save her friend, which led to her losing the match, and hence the title. Now, it would have been a great setup for a Bayley & Sasha Banks vs Asuka & Kairi Sane match at SummerSlam, but as we know, Kairi Sane left WWE. Hence, it remains to be seen how WWE books this angle going forward.
One potential idea could be to let Asuka team up with Nikki Cross to take on The Golden Role Models at SummerSlam for both the RAW and SmackDown Women's titles. But I don't think WWE should book it as Nikki Cross should go solo. She had her tag-team experience with Alexa Bliss, and she should realize that she needs to reach the top of the mountain alone.