Hi Alan Rhodes,
it depends, clouds are very useful to see "given" structures on one sight - in the expended view!
So it depends on the purpose, if I use only PB as an file-server an link-or search-machine, it would be not necessary. But if I like to work out information of an context (classical mindmapping), it would be very useful, I think.
I believe PB's first priority must be to remove thought name truncation and enable multiline thought names. After that, it will become much easier to draw boxes around groups of thoughts.
At first it seemed that Expanded view is the only view where doing this will be practicable. But if thoughts could be arranged by the user in a customized order in Normal view, it would be equally useful to draw a box around a whole group of child thoughts and thus demarcate them from the remainder.
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