People do love MK1 thru UMK3 for nostalgia reasons, but also for the fact that ALL of those characters were original creations, and not knock-offs or copy-paste of other characters.
Can't disagree enough with this. Let's examine:
-Sheeva was a knock-off/copy-paste of Goro and Kintaro, just less powerful.
-Kitana, Mileena and Jade were tweeked versions of one another with different colors.
-Baraka was a male Mileena, or Mileena was a female Baraka. Depending on how you choose to look at it.
-The Ninjas were all distinguished by only uniform colors and move sets. Otherwise, just a bunch of ninjas with different colors. Ermac, Smoke and Rain are all as generic as it gets. MK1 Reptile was deliberately copy and paste of Scorpion and Sub Zero. Smoke wasn't special until he became robotic. Even then, he still retained a lot of Scorpion's traits (spear).
-Robotics. Smoke retained Scorpion's spear and teleportation, along with Reptile's invisibility. Cyrax's net trap was reminiscent of Subby's freeze trap. Sektor was probably the most original. But even then, he still had similar properties to the other robotics, and the Ninjas.
-Goro and Kintaro were distinguishable only by species type.
-Sindel had a lot of the same wave trap properties as Kitana, via her scream. Pretty similar uniform properties as the other female "ninjas," too.
-Skarlet is completely generic. People just dig her, because of her glitch myth in MK2. Even then, at least NRS added a twist to her character with a Bathory angle. Even then, MK already has female vampire type characters, like Nitara.
I could go on all day with this. Point is, the post-Trilogy roster was no more copy&paste than the original Trilogy. But, again, the faults and repetitiveness of the original Trilogy is simply glossed over and romanticized through the lenses of nostalgia. Both eras should be equally embraced, because there is a lot of quality in both. Kenshi's re-implementation is only a small sample of what NRS can do with the post-Trilogy series/characters. I can only imagine how Nitara, Reiko, Fujin, Li Mei, Bo Rai Cho, Darrius and others would translate to the new game play engine. It needs to happen. Those who don't like it can stick with the original Trilogy and MK9; the rest of us can continue enjoying all of the MK Universe.
But, chances are, the original Trilogy purists will bandwagon as soon as the post-Trilogy game is released.