Lytro's desktop software is unlikely to *ever* supplant Adobe Lightroom in my photo toolbox. I use Lightroom for editing photos in ways that Lytro currently cannot -- white balancing, healing, cropping. But far more importantly, I use Lightroom for tagging, archiving, and searching my photos.
I know other photographers -- pro and amature -- have various other filing systems that they use for images. Lytro photos fit into none of these currently.
Even if the Lytro desktop software someday supports the plethera of photo retouching abilities that the existing photo systems have, it still won't be able to replace the photo filing part of workflow because those are pretty deeply entrenched. Far greater value would be if you could make a plug-in for those other systems. I really wish that Adobe Lightroom could import my Lytro images. I wish Lightroom had a "move focus" button enabled for photos shot from my Lytro camera.
Really, there's no reason for Lytro to spend its time trying to build a great photo editing/archiving tool. Those exist, and they're years ahead in development. Catching up will be very hard. But leveraging those tools? That could be done with a lot less effort. And then you have real bragging rights: everything that other photo systems have *and* the ability to retouch focus after you get back from the shoot.