These guys look great. If it did combine that is a bonus but I would be concerned about the proportions of a gestalt so far. The leg mode of Grindrod and Aurora look like the lower legs but Chase would be a full arm. Consider another autobot as a full arm and you only have 2 more robots for the upper legs and torso which is usually ok but these are all tubby guys. Maybe the 7th Throttlebot (called Throttlebot) who is a helicopter could be used to aid proportions?