In general, I feel AS has problems with the terminology & icons it uses. It makes the program more confusing than it needs to be. That being said, maybe consider using a different symbol for activating anything in the Project Explorer.
That icon has been used in ACAD for turning layers on/off for as long as I can remember. It is a completely different function in the Project Explorer. As my office is getting ready to use this I know this is something I will have to explain over and over again.
There are many more things on this forum I'd like to see implemented instead, but I'm tossing it out here anyway.
