When expanding Subtasks, Lists, Custom Fields and anything else that can be expanded to Full Screen, I would like the option to be able to expand the size like we can with the Dashboard to remove the need to have to scroll across or down.

At the moment, I find there is way too much wasted white space when selecting full screen. I often have quite a few Custom Fields that I want to see on the one screen but even when I don't have many, I still need to scroll across.

I have attached a screenshot to show what I mean. This example clearly shows that it's not really full screen, but plenty of white space. So when I have a long list of either columns or rows, I have to scroll down or across instead of seeing the entire data on the one screen.