To me, the only -ality that HAS to be in every game is the Fatality. The others are interchangable throughout the games, and I find Stage Fatalities to be amongst them. MK9 had them, so I don't mind it being absent in MKX. Instead we get some new -alities.
The only thing I find iffy is that the Brutalities in MKX is called "Brutalities". I like the concept ALOT, I just wish it was called something else, because when I hear "Brutality", I associate it with a massive combo that leads to a fatal outcome.
Funny enough, Liu Kang's X-Ray move is very much how I imagined a Brutality would be in a modern MK, but that it should just end in a fatal outcome.