Honestly wouldn't really want Kintaro, didn't like his look in MK9 (went too far on the whole furry tiger thing) and he always has generic monster bad guy lines like "I will eat your heart", where Goro has an actual personality and dialogue.
Keep in mind I don't really know anything storywise about Kintaro or if he is less of a monster and more of a character in any other games, but from MK9.. I'd definitely prefer Goro.
1. They are clearly, obviously even, re-designing all the returning characters in this game, so how he looked in MK9 shouldn't even be in the equation right now.
2. You know the solution to characters with little good story, few personality details or fleshed out dialogue? Putting them in a game and giving them a good story, more personality, and fleshed out dialogue.
I like Kintaro's design, I like what little story and background he has(A member of one of Shokans lower classed races, but one of the species' most powerful warriors to the point of being in Shao Kahn's group of personal enforcers) and the bits and pieces of personality(like his few line(s) in MK9 and a number of his animations that show a some showmanship and arrogance, like his win pose and one of his post-fatality animations).
I want them to build on top of this skeleton they have, because it has potential.
This is the same reason I don't discourage any characters from returning, hell i'd take Meat or Hsu Hao because I know NRS is working to improve their character on all fronts right now.