I prefer to use EU/IEC style symbols and it would be nice to be able to configure one or the other.
Secondly (or alternatively) being able to collapse each section would make navigation a lot easier.
Cheers
Excellent customer service I see...
eg (exaggerated for effect), is already used on _Wiring Tools_ and _Drawing Tools_ toolboxes
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Brand new interactions and interfaces. 
Easy to use and quick to get started. 