The only good thing about the BJP is that they make India a multi-party state.
Ehh Indian politics are far less competitive than they were from 1989-2014 when every government in that time period was some sort of coalition while 2014/2019 were outright BJP wins . State parties have already started to decline as well .
Really the best thing that could happen for India is for the INC to significantly reduce the role the Gandhi family has in the party and maybe you could get a real two party system in India .