I chat with the characters in my scene all the time. The problem with the current approach is that I have to save a snippit that has the prompt asking it to chat with the character in the scene, then every time I want to chat with a character in the scene I need to copy / paste that into the chat. It's time consuming.
It would be so much more convenient if there were a dedicated chat box on the right side under the scene description (or anywhere) that shows each of the scene characters. You could click on one of the characters and it would open a chatbox where you can chat with that character. You should be able to have a chatbox for each scene character open at the same time so that you can quickly jump between chats with characters.