I suggest Mattermost introduce customizable skins or chat themes (like animated backgrounds, colorful avatars, etc.) for user experience personalization.

Gamers and younger audiences often appreciate playful visuals during team communication. This could bring a fun twist and attract more Gen Z users.

For example, our gaming mod community (https://stumbleguymod.com) frequently asks for these types of features in real-time multiplayer experiences. A skin-based plugin or theme builder would really enhance engagement.

Hope this gets noticed by the product team!