If you haven’t already, read this topic:
Next release(s) of the Engine
I expect that 3.3.x releases (when they occur) will incorporate all changes currently in master, and that simple bug fixes currently in master (such as 913 and 928) will get back-ported to the v3.2 branch for inclusion in future 3.2.x releases (when they occur). However, I don’t expect to make those decisions and don’t know when those releases will occur.
I’m impressed that you got KRC to work with a model other than Sinbad.
I suspect the main reason KRC is deprecated in master is that it relies heavily on Bone, Skeleton, and SkeletonControl, which are also deprecated. If someone were to rewrite KRC to use Joint, Armature, and SkinningControl instead, there’d be less reason to deprecate it. But as I said, I’m focused on making it work, for me, with the old animation system; I’ve barely looked at the new animation system.