there are a few I enjoyed, mileenas unmasking I found both scary, yet sexy at the same time but I do agree, I think the fatalities are generally weak with this MK, but none the less, it's still MK!!

I don't know what people expect.
Every MK game has had shit finishing moves.
Look at MK.Cage's, Liu Kang's and i'm sure there are others.
Look at MKII.Raiden's uppercut, Liu Kang's cartwheel fatality, Mileena's stab fatality etc etc.
MK3, pretty much all of them were sad.
MK4, some of them didn't even make sense, and the animation is shocking.
MK:DA, terrible.
Don't make me compile a full list..
They've always been pretty weak, but it's only now that people are realizing it. People praise Sub Zero's head rip from MK, but rubbish Scorpion's MKD head rip.

Yeah I think more time needs to be put into the finishers. I thought the animality's were pretty cool myself.