If you could tell Hasbro/Takara exactly what you wanted a figure to be and get it, no questions asked. What would you want? My ideal transformer would be a combiner. The components would each be triple changers with no common modes (except for robot). They would combine into a well articulated super robot, or a super vehicle (or beast, maybe). The Combined form would be able to transform between these modes without disassembling. 4-6 figures would comprise this combiner and no extra parts would need to be added to it to complete it.