A Nag Ashwin can never be a Rajamouli . Fact.
Looks like Nag Ashwin tried to replicate Rajamouli to setup a so called Kalki Cinematic Universe just like Baahubali universe but has unfortunately flopped. Baahubali had a well defined story, a foundation , Kalki absolutely lacks it.
VFX, AI, animation, Graphics are terrific but where is the story ? . Looks like he has focused more on the decorations rather than the content of the film. Until and unless , there is a strong screenplay all these effects are just decorations.
The name of the film itself is misleading, was Kalki born in the climax ? , No ? Is he in any of those scenes, reference scenes from Mahabharata are shown . Sumati or atleast Kalki - Sum-80/Sumati should have been the title of the film, that would have made more sense.
Amitabh Bachchan's performance, Santosh Narayan's music and background are the only saving grace. Prabhas's characterization is in bits and parts and has not been clearly defined.