Sinful Succulence Morgana and Transcended Kayle are both 975 RP skins, and as such should have at the very least have had new particles when they were updated. You pretty much changed the particles on Kayle and Morgana's other 975 skins, so why were these two ignored?
Here are your OWN words about this skin tier:
[Superior (975 RP) Pushes the champion a step beyond a simple costume change, with more immersive qualities.](https://support.riotgames.com/hc/en-us/articles/201752874)
These skins need their VFX brought in line with their skin pricing, or you need to reduce their pricing to compensate, because as they are, they are simple costume changes and have no immersive qualities. And in regards to Sinful Succulence, it is currently the ONLY Cooking Masters skin WITHOUT a unique VFX - even the 750 RP skins got one new particle when they released, so this is a bit of a blight on this skin line.
I won't press for recalls for these skins, though in reality they should have those too - but at the very least they need new VFX for their skin pricing.