Same thing for me. I am unable to work with the Dynamic Variables in external trees - with the simple float types, nothing related to referencing scene objects.
Same here. I find it difficult to draw properties in unity editor in 2 ways - one for behavior designer, and the other for the rest. I wish we could use the default unity inspector here, it would be awesome.
It would be awesome if we could change the position where are the properties from the inspector are drawn on a graph. Option in preferences seems like the best fit imo. I am using this feature extensively and it makes my tree a bit cluttered since I have to move things further apart.