I doubt it. They don't complain much about Dhruv, Pinaka, ATAGS, Patka etc.
Arjun does have several shortcomings. The issues pointed out in #1891 & #1895 haven't still been proved invalid.
To replace T-90 Bhishma it'd have to be waaaaaaay better than T-90 MS, atleast in the key aspects, or...