I'd really love the ability to use the mouse wheel to scroll the pop-up plugin list instead of using the Up/Down arrows. 
 

The mouse wheel works in the browser plug-in lists

Yeah, I know.  But sometimes I still use the pop-up from the left side vs. the Browser on the right.   Must be a left-brain/right-brain thing.  
 
Edit: I should have added... this would apply to any of the large dialogs that display a list for selection, such as Automation parameters. 
 

Yes this is another no-brainer that really should work. Might I also add, the enabling of the mouse forward/back navigation buttons (usually on the side of the mice which have them) to be able to navigate folders in the browser. To this day, I still hit my mouse's back button to back out of the folder, before realizing it doesn't work and clicking the button instead. 

The popup you get when selecting a "send" destination needs to support the mouse wheel as well.

Exactly.....   Any dialog that has up and down arrows at the top and bottom in order to scroll would qualify!
 

Totally agree.  I have wanted this for some time now. 

Yeah!
Either this or having the list divide into several columns, so that all plugins can show at once.
 
...And if you've got more plugins than would fit on your screen, it would be nice if the mouse wheel took care of the scrolling.. :) ..Maybe then the scroll function could scroll back and forth by column instead of single VST.

Spotify uses exactly the same un-mousewheelable menu widget. I wonder if the GUI library they use doesn't have a wheelable one.

Even wizmouse does not scroll these lists.
 
I am with the multiple columns instead of having to move the mouse pointer to the top and bottom.
 
Seeing all options is more effective and more efficient.
 
The support part of the CW website has dropdowns that do not work correctly. Cannot grab the scroll bar,...