One thing to keep in mind with the crab is that the tweaks to heat change its performance profile. It's built to soak the heat from its large lasers (16 heat, 16 heat sinks) In HBS BT, it won't manage that, at least according to the two week old video with mechlab screenshots. It will generate 60 heat and soak 48. (Worse if you add in the medium and small lasers). It also has little free tonnage, so isn't very customizable
While this is a good thing for people worried about laser boats, a couple stock energy heavy designs are worse as a result.