That would is another gsoc subject, http://www.ogre3d.org/tikiwiki/Help+Req ... ybrid_tree allowing the traversal to be tree implementation agnostic, and allow for chc and other hzb to be implemented easily and independently.It would be awesome to have VFC, CHC++, and HZB as separate implementations that could be used depending on the scene specifics
Note that the basics are within the chc source code, with multiple culling algo implemented using the traversal pattern, with VFC, recursive VFC, stop&wait, chc, debug, etc.
Best would be to extend it so that can have parallel Dod "Data Oriented Design" orientations as much as possible in it.