+ More type of basic block
+ How about bracket added to Craft system.
- The block can be one-by-one connected to each other, this unstable if 2~4 shotguns stand on motorized hinge like this
- Parts can connect between 2, 3, or 4 .... parts
+ Sensor
- Controlling rotate speed of some parts like: motorized hinge
- New type of distance sensor: radar