Please bear with me for a moment as I needlessly overthink the elements of 6.0's launch character(s)

Since the introduction of IT the game mode's featured elements have been loosely related to the featured banner characters, for instance throughout the current month (electro/cryo/dendro) we've had Kinich and Raiden on banners and we currently have Skirk and Shenhe.
Patch 5.8 starts on the 30th of July and thanks to datamines we know that August's featured elements are electro, cryo and anemo which also matches 3 of the 4 characters whose banners will be active during that time, namely Ineffa (new character), Citlali and Chasca.
However 5.8 also extends into the start of September which has the featured elements pyro, hydro and dendro. Mualani is the one 5.8 banner character whose element isn't featured in August, so the hydro element in September might very well be for her.
As we know 6.0 will go up on the 10th of September this means that the first banner half of 6.0 will extend all the way until the end of September.
As the 5.8 banners have no pyro or dendro characters, I therefore believe that there's a solid chance that these elements will be featured on 6.0's first banner, either through a character rerun or a brand new character. Of course there's also the possibility that there's going to be a hydro character, especially given how Ineffa is built around electro-charged, but that doesn't change the fact that pyro or dendro currently have no known characters who might appear in 6.0
I know the current big cope is to blindly believe that 6.0 will launch with a second electro carry since it was mentioned in that dubious roster 'leak' (which I personally don't believe) but I don't see a way to squeeze such a character into September's IT. Therefore if such a character is releasing in 6.0 it will be in the patch's second half since this would also place it in October's IT rotation