Unfortunately, this side project has been on my "back burner" for quite some time and will likely remain there due to limitatations in my time and community interest. There's a number of tasks that would need to be completed first before this can be realized, as well as some higher-priority tasks. On the "community interest" side, I haven't heard much interest; many people are perfectly content with the already-existing SDR software solutions.
Sorry, probably not what you wanted to hear... but that's the truth of the matter - I'm not going to sugarcoat it.
Originally, what I had wanted to do was integrate the bladeRF into a nice form factor with an embedded Linux target (e.g., ODroid, Wandboard) and a touchscreen, and develop a simple spectrum analyzer. The plan was to use Yocto and the meta-sdr layer to generate images "ready to go" SD card images for a few popular platforms. To allow this to operate on some of the less-capable platforms, (e.g. Raspberry pi), the plan was to offload computations to the FPGA and ship post-processed data back to the host for display and reporting of measurements. Additionally, we would want to accelerate frequency tuning, perhaps via a VCOCAP lookup table in the FPGA, to allow the device to sweep much quicker.
So, the above doesn't sound like it really fits the Windows/OSX use-case you had in mind... However, with all that said, I'd encourage you to use a new forum thread or wiki page to discuss what the functionality you'd like to see and how it differs from existing solutions out there.