One of the things that bothered me most about L4 when I first started the Beta was how everything important seemed to be grayed out. Things like scroll bars, little arrows etc. The GUI seemed very empty.
I've come to really appreciate this laid back GUI. it is very uncluttered and I find now if I use L3 or any other bible software it is very "busy" and distracting.
In light of this, is it possible to not have such a big graphic for the new parallel resources? I understand why the filter button is there - as it does tell you something (that filters are or aren't being used in this resources). For Parallel resources however that graphic doesn't tell you anything. Especially now that we will have parallel resources all over the place IMHO there is no need for a graphic (especially one that stands out so much).
Here is the way things currently are:
:
Why couldn't we just have an arrow like this:

Again, since parallel resources are going to be all over the place, we would quickly learn what the little button is for and there would be no need for cluttering up the screen.
Just an idea.
By the way, I love the way these parallel resources work - great job logos team.