There are so many seemingly small enhancements to X2 that add up to a huge improvement for me.
 
A few are:-
 
Track auto zoom
Timeline zoom and scroll - brilliant
Right click Lasso - took me a while to get used to it, but it's SO handy
Improved audio engine - as close to gapless as I need
Take Lanes - love them
Automation lanes
Breverb - love it - use it all the time
Console emulation - ditto
PC FX chains - fantastic.  I rarely use the FX bin now, and really helps with signal flow
Multiple instances of PC modules - great for signal flow again
Blank FX chains - very handy for gain staging (especially now with the Console Emus)
 
I also just like the way it looks - it may not seem important, but I have to stare at it for long periods at a time..
 
I'm sure there are many more, these are just off the top of my head.
 
Since the quickfix, and then X2a, it has also been rock solid for me.
 
Thanks for posting this thread and letting people share their positive experiences.

A few others I like.
 
Track folders. I use them a lot.
The mix module
The ease of creating templates
Automation lanes
Control over the input of a track. (Input gain knob)
Very easy to create a well laid out effects layout.

Seriously, for the way I work, nothing has been a showstopper (for me).
 

Secondary Snap

Enable/disable audio metronome finally works during playback and recording.

Replace synth. 

The thing that's radically improved my daily working life the most is the bug fixes to copying and pasting of automation. Seriously. After that, I think the console emulation is amazing.

John


Replace synth. 

Thanks for reminding me of that one, John.
 
There are certain things that I don't use that often, but I'm so grateful for them when I do.
 
I also think that R Mix could be a great tool, but I've just not had the time to devote to it.  Watching Noel's blog has indicated how handy it could be, though.
 
Any more suggestions here that can remind me of any more improvemnts?
 
P.S.  I don't work for Cakewalk..

panup


Enable/disable audio metronome finally works during playback and recording.

+1
 
And being able to access the metrenome settings from the control bar and sub-divide the beat.

What X2a features do you like the best?

The lack of arguing on this forum any more.