I love Goro and so glad he's in, but I really have a hard time coming up with variations just like you guys it seems.
Crushing variation: teleport double stomp, some grappling moves, some different throws, overhead back crack throw for example. Recognised by his belt, something distinguishable llike glowing parts.
Double trouble variation: some new moves involving using all four arms to the fullest, like one where one arm punches the face, the other the chest, the other the stomache and the last the nuts. This one is pure attack, punches cause more damage, combos and he should use his wristbands in some way as well. He has some spikes on his wristbands to distinguish the style.
Dragon variation: he has his fireballs, but should also have fire spit attacks (Dragons usually spit fire you know) and something else that is typical to his Shokan dragon like character. He has the red eyes and maybe some more marks on his upper arms and back.
Moves across all variations: that twisting move from MK1, punchwalk, the one where he has a lot of reach with his arms by suddenly attacking with his upper arms towards the gut, using the lower arms to grab the opponent and beating the chest to get the guy off again.
Edit: WOW i did not even see the above post, dude we have a lot of similar ideas, crazy!!