Hello Innersloth, massive fan of your game. (And at this point who isn't?) Though, I do have a few requests about future updates that could help the game out.
1. I don't think there is enough colour variety in the hats/clothing. There's only a few hats that change colour with your own avatar colour, but most of them look pretty goofy. I'm seeing a lot of blues, greens and blacks in the hats section, and a couple others here and there. You should make at least 2 hats for every different coloured avatar in the game.
2. With the coming accounts and friend lists and everything to do with them, I personally think this is a fantastic idea that can help people in many ways, especially the reporting side of it. However, as I have seen a few other people say, there should be a "troll report" system in place, so if somebody bans you for no valid reason, the player that reported the other person also gets punished.
3. More maps should be implemented. I know map making can take up a lot of time and recourses, but after this update comes out the game to me would be basically finished. Bug fixes here and there of course, but other than fixing bugs, to me the accounts are the last thing that need to be added. Though, it might be hard to find new map ideas, do some off the games you've added easter eggs about, The Legend of Zelda, Henry Stickmin (I know there's one of these maps coming soon), but you should add more maps like that.
And that's all I have to say about this games future updates. I absolutely love the game and i've drained hours upon hours into it. Thanks for giving us all a game that proves you don't need good graphics to be a best-seller title, aside from minecraft of course but this was the first one everybody realized the truth.