So, i'll start by saying, I'm not actually much of a skarlet fan at all and would prefer a lot of other characters over her in MKX, so don't hate on me for being a skarlet fan who will find anything to make it seem like she's in the game..
And I know she is a lot less likely because of Boon saying the dlc characters from MK9 probably won't make it.. But that still doesn't change me thinking that it was a reference to her, whether or not that reference means anything, who knows.
But a lot of people seem to think he was referencing Kano, which I don't understand, they say the tweet says commando in big letters, which is obviously true.. But at the time of this being released, we didn't know Kano would have a variation called commando, so how would that have hinted towards him? If someone gives a good explanation then i'll give up on this theory