I enjoy the Chocolate Box and Episode Race mini-games within the main Candy Crush game on iOS. I made an account here specifically to request that those parts of the game do not randomly disappear and reappear.
Game Win Streak (i.e. start with extra boosters if you have a streak of always winning on the first attempt of a level) has definitely caused me to watch more ads, because I want to safeguard my existing streak. So there is business value to maintaining that feature every day, I think. For me, that feature has come and gone at least twice recently, and currently the Game Win Streak is not being tracked or awarded on my device.