Why remove Darkest Tower but add Constricting Command?

Gonna answer the title immediatley, They removed darkest tower because it was "too op", then add a new unique helmet Constricting Command that does almost the exact same thing as darket tower, yet argurably MORE OP, There are equally amount of support gems and nodes on tree that affect surrounded by as there are low life, so why disable 1 unique for being too powerful just to add one equally if not more powerful???? really doesn't make any major sense here besides lowlife being too easily accesible/easier to build around vs surrounded by, like theres a support gem that allows you to use skills for no mana cost if surrounded, surrounded = 5 or more enemies, Constricting Command reduces the surrounded by requirement by 2-5, meaning get a roll of 5, you are ALWAYS SURROUNDED... so never have to worry about mana costs, nodes that increase attack damage by 100% while surrounded, like if darkest tower was still in the game these would be 2 solid choices for increasing damage of builds, but they removed darkest tower for being too powerful, yet add this??? it just doesn't make sense