I wish to approach this from another perspective. In order to make moderation more effective by supplying instantaneous bans, it is understandable why you wish to implement your block-ban system, but why make the trial explicitly (and publicly) known? It would be more appropriate to keep it in secrecy to reduce the possibility of unjust bans via the server itself.
Regardless, in its core, Fearlheart is a game aimed at a younger audience—an audience that is vulnerable to the evils of people with bad intentions—which need guidance on what is not appropriate to tell to strangers online. If one block does not outright ban the offender, they may still roam around the game free. Of course, one can argue that it is impossible for the moderators to know all of the happenings in the game, however it is important there is human reasoning—something computers lack—in every situation moderators are confronted are able to reach. Those that do not see an apparent issue or disturbance will not block. Consequently, I only feel as if Feralheart will become a dangerous place if the "no-mod" system is run unaccompanied by actual human moderators.
Feralheart is far from a utopia, and one can not expect an imperfect society to control itself without justifiable and logical execution of law.
edit: After looking into everything that has been happening lately, I am disgusted. No one should be getting cut by this decision.