My personal opinion is that it should not be changed, due to Mikhail Kalinin not partaking in the atrocities committed by the Bolsheviks during their rule. He, for most part, was a mere figurehead, terrorized by Stalin, mostly. Thus, he shouldn't be demonized and the name of the city changed.
However, I am not an expert on this, so if anyone can show me (with evidence and sources) that Mikhail Kalinin indeed took part in the numerous atrocities, I will reconsider my stance.
So, NSG, what do you think?