For the last 5 years or so I've been a 100% linux user, so my knowlege of other OS is somewhat rusty (previously Microsoft up to about XP, and no real Mac experience, so I've been guessing). So any input from that side of things is very welcome. For the same reason I have been necessarily been less interested in video capture open kinect etc, so any input there would also be very useful (but I should really get tooled up with arduino too).
However in the first instance I was just thinking about you adding a link to you open kinect work.
The future for ruby-processing is intimately tied to both jruby (and some interesting things are happening there jruby 9000 and jdk8 will likely bring performance improvements) and processing (and I've a feeling that processing-2.10+ has yet to bed in on the Mac?).
For more radical experiments I've created a clean fork https://github.com/monkstone/JRubyArt, where I'm experimenting with the development version of processing and jruby. Lately I've been experimenting with pry