Hello there, XorX
Welcome to the forum. Please note this is an unofficial forum. It is run by players for players. Disney have nothing to do with this site. Disney's official forum closed down some time ago.
Many commanders use other messaging apps to improve communication. LINE seems to be the most popular for this game. Others use Band, or Discord.
My squad uses LINE. LINE is free to download. You don't need to share your real name, email address or phone number when you use it. You can create a profile that you only use for this game, if you like. You can then message far more easily, and share material in a group chat.
I encourage everyone in my squad to download and use it. I also encourage everyone to use their in-game name when they use it. It's the only name I know them by, anyway.
If you want Disney to see / read your suggestions, you should use the 'contact us' option in settings in the app. I do think they look at this site from time to time. I have no idea what they do about what they see here.