I just researched the black outline issue: it's because the algorithm compares the reflection sample with original depth and if a close object reflects onto a far object (which shouldn't happen as it looks weird - remember RBM is everything but physically correct reflection!) it gets discarded. But if I just replace it by the original color instead, black outlines are gone.
THAT would be very handy, because I got loads of black lines with RBM enabled and DOF disabled (DOF covers up the many black lines from RBM in the distance at a certain angle but not all).
I would love to see a RMB v2.
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