I am pretty ambivalent..
Its easy enough to put markers in for chords, and its easy enough to do a search for suitable chord progressions... and even easier to spend some time understanding and working inversions.
So the issue i have with a chord track, is that it needs to be really, really good, and highly flexible and also customizable for it to useful at all.. then the reality is that it still wont be enough because folk will want automatic arrangements, then auto accompaniment, then a better or easier interface ..
by example.. checkout NI & Maschine.. NI put chord mode into the sequencer.. and it sucks ass. a total waste of development effort and it provides marginal to zero use to the users. why?.. no inversions, no ability to create custom chord maps.
The bottom line is that if you want chords, progressions, arrangements, auto accompaniment or whatever, there are already solutions out there for you to go get.
I just think there has to be a huge list of more important things for CW to work on.. Things that only CW can fix and improve .. rather than duplicating something that is already available.