Will Permadeath be a detriment to playing?
It will only be a detriment to you if your primary goal is to cause grief for other players by non-consensually killing them. Once you have murdered a citizen of a city, you might as well not show up in that city if it has a permadeath penalty, because yes, you can be deleted from the game. If you murder a player that is not a citizen of a city, then by default you can only be punished by that victim. Needless to say it is much more “safe” to declare your citizenship to either a player-run or NPC-run city. We hope that the end result will be a small few players that manage to live with the “murderer flag” and are considered dangerous, while the vast majority of grief killers will be low-skilled, easily defeated players with nearly new characters.