I’ve been wondering—does a Fediverse-based equivalent to Discord exist?

I know there are alternatives like Matrix, Revolt, etc., but what I’m looking for is something more akin to Discord that’s Decentralized, Open-Sourced, and makes use of ActivityPub.

If it doesn’t exist, has anyone ever thought about attempting something like this?

What I envision is something that would potentially serve as a decentralized clone of Discord, with features like voice and video chat, text channels, stickers and emojis, customizable communities, etc.

Perhaps make each of the communities an instance, self-hosted by the instance owner(s).

Names for such a project could reflect its functionality or ethos, perhaps something like:
ActivityChat
SocialHub
MeshTalk

Or maybe a name that’s the complete opposite of “Discord,” such as:
Harmony
Concord
Rapport

Unfortunately, I don’t have the time, energy, or technical knowledge to start such a project myself, but I thought that this might be an interesting idea for the community to discuss or brainstorm.

Would this kind of platform fill a gap in the current Fediverse landscape?

What challenges do you think it would face?

Would it gain traction in the Fediverse?