Despite having joined in 2017, I've actually been viewing this forum for quite a long time, I've just not got around to making an account. (Partially because of Twitch.)
I use Linux, albeit I've also had plenty of experience with Windows. It's my job to work with Windows, actually.
Tips for new suggesters or forum posters, written by me:
Fix that block of text with some formatting. You have a range of options, including Bold, Italic, and Underline font, as well as changing font sizes and the convenient Enter button. You could also try changing the colors of some of your text, but I don't advise doing this because it looks childish and silly.
You don't need to put four or five lines of text in a spoiler. At the very least a spoiler deserves two paragraphs, otherwise you can just include whatever you have in a spoiler in your main post. Speaking of paragraphs, you should make your paragraphs three to five lines long. Any shorter or longer and your eyes want to skim over possibly important details.
And when you've gone through and formatted your post, notice the worlds with red underline. If you right-click them, you will usually get a few results on how to actually spell the words you are looking for. If you can't right-click them because you are using a phone, please, I beg you, switch to a computer. Phones are designed for voice mail and short text messages, not for posting long rants about what new kinds of creepers should be added into the game.
My thoughts on:
Vertical slabs and furniture
Hunger in Peaceful and other Composite Difficulty settings
Wolves and pet beds, making wolves more pet-like, you get the idea.
AFK Fish Farms
Early Firearms, such as the Arquebus
Is Minecraft a Fantasy Game; Magic in Minecraft
You'll notice a trend in that very recently I've been playing Devil's Advocate with a lot of ideas often proposed by new users that are often immediately dismissed by experienced users, such as furniture or guns. I think it's good to think about something from the other side, and I think I can give good reasons why these things would fit into Minecraft.
Tool Switching, a way to save hotbar space.
Kiosk Mode for libraries and schools.
My old and slightly outdated Food and Hunger System Overhaul suggestion.
Minecraft C1ff Steam C1ff