One main issue I had was also the implementation of the concept of Janna being some sort of wind goddess.
Her new lore doesn't really make her sound godlike she inhabits Zaun arguably one of the worst cities in Runeterra in terms of living quality considering crime goes unchecked, Piltover treats Zaun like trash, Chem Barons/Drug lords rule the place, lethal levels of pollution, and people like Singed doing whatever he wants, Warwick eating people alive, etc. and yet has an actual goddess living in the city and this doesn't seem to change the politics of Zaun and Piltover nor does it effect the quality of life of the citizens.
Janna kind of just occasionally shows up blows away some of the pollution to more manageable levels and may randomly hug someone and tell them it will be okay without really doing or even implying she's trying to solve the real issues. This would be alright if she was still some human who just learned wind magic but it just doesn't seem godlike, especially when you compare her to all the other non-god and yet still powerful champions in Runeterra.
Despite this Janna is for some reason worshiped as a goddess, people even pray to her. I just find that odd. What would they think of someone like Lux who can bend light, disintegrate people with laser beams , and copy any magic she sees at will?