Oh gods, I remember that. That was so painful to watch. It wasn't even funny, just painful. Could have been shown instead lifting entire barrier and then being interrupted by Tarkatans. Hell they could have played this in such smart way too. They could have dropped a statue on the caravan and Ermac could stop it from falling, but he wouldn't be able to do anything else, due statue's sheer size taking all of his power to keep it from crashing on everyone and then Mileena could have used the opening to attack.
They don't know what to do with some of these characters anymore, old or new (sadly), when it comes to the lore:
Ferra / Torr - awesome character(s) in concept, design and gameplay.... Hardly any story stuff for them.
Dark Raiden - Exists outside of time itself, but somehow Kronika manages to get rid of him.
Kotal Kahn - was a cool character during the time of MKX, but in MK11 he gets the shit beat out of him by Shao Kahn, then beheaded by Shao on the ship..... gets defeated in his own reveal trailer.
Noob Saibot - has a couple of minor parts in the MK11 story, but otherwise insignificant.
Liu Kang - the story in MK11 revolves around him once again (surprise, surprise), and since him being top warrior and champion of all of MK isn't good enough, now he's the keeper of all time.