Anderton
Curious as to why. Is this really something you need to refer to so much that it's not enough just to open the Track Manager and locate the track, or hit shift+z to collapse all the headers temporarily? 

Well, for one thing, the hidden track dialog is small and you have to scroll through it. The browser is much longer. I mean couldn't the same be said for the new track pane in the PRV? Why not just have a pop-up dialog for that?

Anderton
Track Manager lists all tracks and buses, in a window that you can move around anywhere (like to a second monitor). You can also highlight muted, archived, and frozen tracks if you're curious which tracks have those attributes.
 
For a quickie you can just use Shift + Z when you want to see track headers only.

In S1 and PT and mixbus you click on a track in their 'track manager thingy' and the track is located and highlighted in the track/console view ready for mangling. No scrolling. 
 
I see Cakewalk's TM as more of a semi-permenant solution whereby things are organized for the long run. Plus it disappears. S1 and PT etc. it is more of a current real time solution to navigation and organization that doesn't disappear unless you want it to.

RSMCGUITAR

Anderton
Curious as to why. Is this really something you need to refer to so much that it's not enough just to open the Track Manager and locate the track, or hit shift+z to collapse all the headers temporarily? 

...couldn't the same be said for the new track pane in the PRV? Why not just have a pop-up dialog for that?

 
That would be good.

Personally my projects are no more than 30-40 tracks per project and I navigate fine through my projects, but I could see how a feature like this could be helpful.
 
What I do is use the Console view (With Narrow tracks) to locate tracks I need and click on them to show the track I want to see in TV. So I can totally understand where you are coming from. But remember even if it is in the Browser, its more one thing to take up space/or open and close) But still, I could see the possibility's.