Compiled a lot of UI Redesign information, continue suggesting here!

@slightlyangrydodo - Hi Pedro. Thanks for putting this together. The one thing I know that had a lot of discussion a while back was improving the UI for the brush editor. There is a number of discussions that happened. here are a couple that I found. The big thing before was making it detachable. With that possible in 5.0…we can probably continue on to the next requests of improving it.