tessus
2
I don't think carrets are necessary, because it is always clear when they are expanded/collapsed. If one can see folders/tags, they are expanded.
There don't have to be additional indicators that tell me what I already know. The only effect this change has is that all notebooks and tags are moved to the right (the number of pixels used for the carret plus indentation).
IMO, it's a waste of my precious screen real estate.