Hi Stardust,

re:
> Would it be possible to make a plugin and realtime updates for Keyshot 5
> integration? (Or perhaps tweak an existing)

Check out Andrei's scripts from this thread here, maybe it will do what you are looking for:
http://moi3d.com/forum/index.php?webtag=MOI&msg=7287.1

I'm sorry but I myself just do not have enough time available to do custom plug-ins for individual renderers - I'm focused on making a high quality file export instead of making plug-ins, since the file export can be used with many different renderers while a plug-in only works with a specific program.

- Michael