Nemo,
Nice job. Actually the only other thing I like is to use the AvST sink and source blocks for the IO. If you use those, then this model can be detected by SOPC Builder and automatically integrated as a component. The other cool thing about 7.2 is the IP isn't generated until you run quartus, which means its faster to try different IP settings.
The design I attached can show you that (but I didn't include the video), there is also the same thing for AvMM components.
Brian
