EZI, essentially the removal of a player, should be the domain of the Admin and CN Mods. It too closely comes to acting against someone OOC. In fact any punitive measure that targets the 'person' as opposed to the game token is unreasonable to the point that the Admin should respond.
PZI is simply cruel, but driving someone to re roll is not outside the boundaries of the game. It might be better for all if we did away with the 'permanent' and set some reasonable time, as has been suggested.
Exile is a reasonable fate for failed leaders. It could even go as far as an exile to 'None', depending on how potentially dangerous the subject is perceived as being.
It would be well though for those in the position to impose such penalties to consider, well, karma. What we witness over the past several years was a creeping expansion of punitive measures and a move in the opposite direction might serve us well as a community. When better to start than a global event.
Any thoughts to creating standards and a body to observe, judge or enforce them?