I dont think it is that, a PS 1 is being made today which is historical fiction, or an adipurush, they may have all got momemtum or budgets because of baahubali worked, but they are original in their stories conceptualization and will build a world of their own. adipurush being ramayana will have a soild world I am guessing.
the main complaint of brahmastra was as you said casting and also that mythology was not deeply embedded and people expected more of that, they wanted to know more about the astras, its origin, the world, what they got was a love story which was trite
Forced love stories are the worst. Absolute worst. A lot of Lord of the Rings readers were upset when Peter Jackson made Arwen so prominent. She appears only in the appendices. Her love story with Aragorn is not significant to the destruction of the ring of power. Ironically, the love story that is important in the book is Faramir and Eowyn and that got brushed over in the movies.
Tbh, Brahmastra did not need Alia and it could have been a journey of self-discovery without a significant other.
14