I find myself more and more disinterested in Missions
It's very probable that it's like that due to me having all the champions I'm interested in already purchased, or general lack of care about bonus visual stuff like skins, icons or emotes, but recently, with the Odyssey event, I realized that I don't actually feel like completing those missions. While it's true that I kinda dislike Odyssey game mode in general, my lack of interest still continued to current Worlds missions. Missions just feel way too "bloated", although I'm not sure if it's a correct word to use in this case. There's too many of them and they require way too much commitment, at least for me. Add to that somewhat questionable way Riot is portraying Missions' rewards with those silly Worlds Tokens and such.
I it were me, I'd try to design a bunch of simple daily missions, like "play a game with an X class of champions", or "deal Y damage to objectives", while also cutting on the amount of missions during events. Seeing "Completed 1 mission. 9 missions added" at the end of a random game in which I wasn't even aware that I'm completing a mission really doesn't feel that great.