Better vis and lower minimums at the other end?
But a 10kt tailwind and torrential rain is a very bad combination. If you absolutely must do it, then you need to make a "carrier deck" landing and firmly plant it within the touchdown zone. Continuing a landing as they did when they must have known they had floated far beyond the touchdown zone, seems crazy. I really hope there is a technical reason for this crash, not a human one.
If there was that much rain, then there must presumably have been a cell of convective above the airport- so why attempt to land underneath a cell with the dangers of a microburst?, let alone the torrential rain, and potential turbulence.
Why not hold and wait for 20 mins until the cell has moved off? I have had this conversation with Captains a few times - what about the cell over the airport? - what about it? - well what about microburst? what about the torrential rain? why not wait or go somewhere else? = "No, it'll be fine".
This Air India flight might have floated because of the outflow from a microburst at the other end of the runway.....