That's not very important, but it would be a really nice feature. Could the chat stop moving when it's not rolled to the bottom? Some people like reading backlog, and if it keeps jumping to the bottom because someone said something it makes it hard if not impossible.

Also could the font in the input window be a bit bigger (or different color, or different shape, something...)? I'm having problems seeing what I'm typing, while I have absolutely no problems with the messages already sent.

For readability at microscopic size I highly recommend the pixel-oriented typeface 04b-03. It's crystal clear at 8 pixel line height (6 point).

https://www.google.com/search?btnI=1&q=04b-03