@ton: thanx for your feedback -- UIs are quite a complex subject and you are right it takes time/experience to nail these... (will pick up some literature/links on that matter as well- got some good advice?)
@ton: did you mean "slows the outliner down even more"? not sure about this... you mean with regex? (because my current implementation actually speeds it up once you hide stuff... like 10x only hiding objectdata...)
You propose to have a way to filter and categorize data types drawn in outliner. Sofar so good. I can see the use for that.
The problem (which your UI illustrates) is that the amount of choices and options here easiy goes out of control. There is no obvious selection possible either. That is why a regex could work. Like: "Ob type is mesh and has subsurf". (In reality these look quite more clumsy).
Closed by commit rBACc8ed86374865.
@Severin made a fix, I'll commit soon.
Exact steps for others to reproduce error:
Open .blend file, if you use button and head of Xbox joystyck in blender 2.72 the empty (and cube associate) move well.
But if you use blender 2.73 or 2.74 testbuild the joystick sensors button and hat is not working properly.
Closed by commit rB02685aca5238.
Could you also tell us which version of Windows you're using? In the bug report you just mention "64 bit".
I still think this lets you work in a faster and more organized way (especially in heavy scenes) -- it just hides away things that are not in interest atm...
I also think improved performance in heavy scenes is quite something.
So, calling this useful "only in a very minor way" seems subjective [it doesnt hold for me - and apparently others]
Generally looks good,