@kaiko Yes, Discord is a platform where you can host your own private or public server with text and voice chat. Making an account is actually free, but you can test the system with a guest account.
You can also use your browser or download an installable app for windows, macOS or Linux systems.
It’s not required that you use it, although we have the forums linked with the discord server so having a role here will give you a server role there.
You can read this post for more info on that: [Announcement] Discord / Fourm Roles
Anyway, regarding MyPaint, I think that once there are more presets available the icons could get smaller, but like in MyPaint, that should be a choice for the user. I personally like them big because I’m kind of blind so I need to see them extra large 