It needs to let you move bubbles to any order you want
Lets you free-order your bubbles in any arrangment
Search for "free layout" to remove votes from this and add them to the most requested feature instead. Wish devs would combine (or allow users to combine) similar request so vagaries of search term don't lead to putting votes in places they don't have as much value. Also - shift key doesn't work anymore in MindMup 2.0.
Andrei Zhulin commented
Actually you can do it by dragging a node while holding Shift key. Enjoy!