Feature Request: locally changing bot icons

Would be fantastic if a custom avatar for a bot would function the same way a custom nickname does for a bot- would help for immersion and aesthetics/fun! The avatar would only appear locally. Oftentimes, bots are renamed to reference chat-wide memes, fandom characters, or even twitch personalities. If the avatar PHOTO could be LOCALLY customized, it would be a great feature! this would not at all affect the bot account's icon, and would have no association with the creators. please share your thoughts!!!