I prefer either nicer simple fatalities and fatalities that use the characters abilities. I'm not sure what it was about MKX fatalities but I didn't like most of them, just kind of overtly weird and gross I guess. I love most of MK9's fatalities, good use of character ablities and goofy and entertaining enough.
I also enjoy a majority of MK11's fatalities as well, some of them are quick and to the point like Jades, where she cuts off all the limbs and impales them, while others make great use of the characters abilities like Noob. My criticism for them is also the freeze frame shot on the fatalities, I don't mind them on some fatalities but I kind of wish some others would return to normal after the freeze frame. I'd prefer a little ending animation after the freeze frame that you could skip if you want, maybe something where most characters just walk away. Frost for example, her cyber Lin Kuei fatality is great and the freeze frame is perfect, but for the Ice sculpture fatality I wouldn't mind it returning to normal speed to a skippable scene of Frost walking past it and casually tips it over so it shatters as she keeps walking.