Not that i want to be fussy but its just an idea.
Going back to when you added support for the left/right keys, maybe if you could make the keys work similar to KotOR Tool, where left would return to the top of the current struct, left again would close it. Right would zoom down to the nearest struct and right again would open it. You know what i mean if you have KotOR Tool, if you don't then how on earth do extract files??
Thanks for adding the function in the first place anyway