**That's theoretical thinking, The tribunal does not solve every problem. That's like saying jail solves every problem... ** In order to fully remove trolls is to prevent free speech, which means to blur out every negative word to the point that there is only positive words.
Trolls sometimes do not speak, well, to remove the trolls that do not speak, make it a requirement to speak to the team in someway that displays that the team cares. If the troll does not speak in one game, it is therefore unable to play ranked until a certain time period.
Thus this will lessen the number of trolls, because it sets rules that the gamer must abide to.