Before I continue, I'm not "white knighting" SE (because frankly, they've shat on healers and whatnot way too much this round).

The outfit I saw in Eden 8 (or is it different in Savage?) was a deep V neck then went passed the navel, not the dragon outfit (the dragon outfit is cooler). Maybe I need to pay more attention to see the dragon outfit.

In my opinion, people are getting worked up over very little. People cry hypocrisy, but Ryne is still under SE's control. Part of the issue with playable children is not just how they can be glammed by players, but how they can be acted as, named, and RP'd. Some people already abuse lalas as "lolis" and "shotas" (I've had to report some for their names before because they got that gross about it). They'd have a field day with actual child characters.

Personally, I find the dragon outfit and the V-neck to be inspired by biblical/High Italian Renaissance paintings/sculptures (would link but nudity) as well as variations of Shiva. In high Italian Renaissance/biblical art, they are sometimes tastfully nude with fabrics draped over the lap or body in general in some way, they like to play with fabric folds (especially in hoods) like Michelangelo's Adam & God in the Sistine Chapel or La Pieta (La Pieta has a nearly naked Jesus with a fully robed Mary). There are also variations of Venus with little to no garb/fabric. And with Shiva, most variations of Shiva have very minimal attire, mainly covering the breasts and the pelvis area.

So, it suits Shiva and it suits the Sineater/Shadowbringer vibe all together. It was very mindless of them, though. I think they were going more for a "cool factor" than thinking about a potential issue. If anything, they might censor it for us Westerners while keeping it the same for everywhere else seeing as we get offended over everything. Personally, I think the dragon outfit is fine. Girls usually start wearing 2-piece bathing suits somewhere in elementary, sometimes exposing the middrift area and sometimes not. The deep V neck is a bit too racey, but I honestly had to zoom in and rotate my camera to actually see it (and I always keep zoomed out for trials/dungeons), so it took me a couple runs to notice.

As for her undress/redress mystical sparkle mist cloud around her body: she's a magical girl having her magical transformation moment. Let her live her Sailor Moon dreams.