Please ad more autumn related blocks

We have leaf litter, mushrooms and pumpkins. These are all amazing and I love them, however I can't help when I see a birch tree and think, what if it had yellow or even orange leaves. Making a new wood type isnt the goal for me, however the ability to obtain these leaves would be essential to add them to our bases as bushes ect. Another grass type could work as well. Please understand I'm not expecting a new biome, I would just love that one last thing to really push an autumn season. We have the opportunity to experience all of the 4 seasons if this additional gets added, I've seen add ons that have this but I really feel like this belongs in vanilla minecraft. Essentially allow us to completey design our own seasonal biomes. Thank you mojang additionally for making such a wonderful game.