That's a good question, did JND pick up the license rights for ZSJL or for Aquaman? (Maybe that's what they meant for new IP's! Gotcha, it's still DC but another movie away from the Nolan Batman movies
)
That said, my actual favorite Mera outfit is the "wedding dress" one. Ultimately I hope (if they have the Aquaman license) that they do the same outfit as the IS bust. The wedding dress would likely be way too niche.