I don't see how it would be weird lol, if anything it would only enhance the way the characters look. They did it to some extent in MKDA, characters such as Raiden, Quan Chi, Jax etc were noticably taller/heavier built than characters such as Kung Lao, Mavado and Kano. It also felt more natural and realistic. Plus its not like characters are turned to be turned into midgets and giants to make it look THAT apparent. You wouldn't really notice a height difference between a 5'10'' to 6'2'' range, but still it would be apparent on closer inspection and thats what I kinda want. Look at Jin and Kazuya from Tekken for example. Both are the same heights and 'looks' like they have the same physique but on looking at them more carefully, the differences are notable. I want this kind of an approach for Mk9 mainly because right through the series we have seen MK trying to evolve into a good fighter. In the first game what set the characters apart were just their specials and looks and nothing more. Same with MK2, the strategy for these games mainly revolved around the effectiveness of specials and who had the faster punch/kick by doing frame by frame analysis. Then the run and combos came in followed by fighting styles, inspite of all these the character didn't feel 'unique' as compared to the Tekken characters. But finally with MK9 I feel that they have got all of it right, no characters are pallete swaps, all have different and unique combo potentials, all play differently and thus I would also like for them to look more differently to give them that more of that 'unique' factor. In the MK9 Jax is a hard hitter and grappler and thus he could have had a broader frame and taller. Similarly with Raiden, since he is a God he could have been taller as well. Frankly although all characters are unique in their own ways, the only character that stands out to me as really unique is Sheeva. She is taller than the rest, has a larger hitbox and doesn't fight like anyone else in the game. That is the kind of unique i want for all characters.
Hope you understand what I mean lol, orginal or new characters I feel they should be presented in a more unique and different way.
Those are only a handful of characters and Goro, Kintaro and Sheeva were made taller since they are meant to be taller. Also the reason why the earlier MK games had similar character heights and physique was that majority of the characters were represented by the same people lol. In is no reason to stick to that anymore and like I explained above, I would like the characters to be more unique.
Also another I would not want is the nostalgia shenanigans some fans keep bombarding Boon's twitter with. You guys got your fan service with MK9 now for heaven's sake please leave NRS to develop MK's future in the way they see fit. You will only remain in the past by clinging to the past and nothing more.