I am afraid that Blender does not support bvh files
I mean , you can import a bvh file but you have to rig your model again rather than simply copying it to an exsiting skeleton
If so in my opinion it is a serious drawback for many hobbyest game developers
You save so much time thanks to bvh files
Anyawy I am not so familiar with Blender, I would be happy to be wrong
The new edition is definitely more user friendly