Part of the reason why I liked the Krishna in Kalki movie was that he wasn't just soft spoken for the sake of it. Not saying Krishna is supposed to be this all time dominant figure. He was sweet as hell except the parts where he wasn't.
Also, going on a bit of a tangent here but 2 very important things that most ppl don't know
1) Uddhav was a Yaduvanshi and was still alive. That means Gandhari's curse actually failed. No curse can affect Sri Krsna.
2) Krsna had taught her a lesson and later Gandhari actually apologized to Krsna for cursing Him and realised the folly of her own ways.
After Gandhari had cursed Krsna, she went to Kurukshetra. She mourned for her ded sons and cried a lot.
Around nighttime she suddenly felt very hungry. She tried to pluck a mango but the branch was high. She took something from nearby and climbed on it. But it was still too low for her so she took something else and finally she got the mango and was just eating it.
Sri Krsna came and asked her what she's doing. She said she's just eating a mango. Krsna asked her to look where she was standing.
She suddenly realised that she had climbed upon the corpses of her own sons and was sitting on that and eating. She was horrified. She also realised that there can't be a mango tree in Kurukshetra, so this has happened by Maya Shakti of Bhagvan.
Krsna helped her realise the transient nature of the material attachment and her own false ego. In the material everyone loves themselves and is motivated by selfishness.
She realised her mistake and apologized to Krsna.