That's all true, but it's also important not to forget that the mount gets four points in BJJ because of strikes, not submission opportunities. Sometimes what the DDS guys are doing looks like tightened-up Shooto as much as it does BJJ. I guess the good ship Fighting Applicability sailed out of Sport BJJ Harbour some years ago now, but these developments do seem to drift them even further apart. Does anyone know if Danaher has said anything on the topic? Especially given he wrote the pretty-much-definitive explanation of the positional hierarchy doctrine in Mastering Jujitsu.