It is quite surprising that the video leaked at this time, but it could give audiences a hint at the level of physicality involved in the role. This may very well be part of Hela’s arrival to Asgard in her attempt to overthrow Odin (who is really Loki) as the ruler of the realm. Even if this is not the case, Hela leaping and spinning like this suggests that she will be more than capable of holding her own in a fight — possibly even against the mighty Asgardians.
Much of Hela’s plan continues to remain a mystery for now, but early reports suggest it involves the banishment of Thor, and possibly even his adopted brother Loki. It is believed those circumstances will lead them to search for the real Odin on their adventure. What drives Hela to want to rule Asgard remains to be seen, but it should provide quite the conflict for the heroes. Based on the video alone, once Thor and others return to Asgard, they could have their hands full trying to stop this new villain.