I used to like being able to plant all kinds of berries, not only for collecting but for poffin-making. I miss the beauty contests from RSE. I miss being able to go underground in Platinum to dig up cool evolution stones and fossils. I miss being able to design my base, even though I never had visitors. I miss being able to sewing my Pokeball animations. Being able to go to the Battle Frontier to encounter all sorts of new challenges.
It's kinda sad, but as the series has progressed, they've started doing away with all of these things. Who else wishes they would introduce some of these elements back into the game?