Split Screen Feature
A new and very useful feature would be to have a split screen similar to MS Word. It works by having the user pull a tab down the screen to any position, splitting the screen into two views, identical to creating a cloned tab or cloned window, but now everything is in the same window. One of views can be used for browsing. This creates a much easier viewing environment and one doesn't need to switch between tabs or windows.
[Moved to Suggestion Box]
This isn't the suggestion forum. You might try posting this there.