It is a simple thing, but when you have a lot of engine versions installed it would be handy to be able to just click and drag the blue launcher rectangles for each engine version so they can be arranged in a different order. or if it would just automatically list them in descending order of newest to oldest that would work as well. 5.3.2 then 5.2.1 then 5.1.1 etc, currently they are immovable and are in the order they were installed.