In cases like those, though, you either learn or suffer peer indignation. Like Doom, if you don't recognize that you've got it things go south people are going to point it out. If they still don't get it then no manner of tutorial is going to change that. Can't cure stupid. Environmental debuffs are often impossible to avoid, like an elemental weakness or electrified floors. In those cases you either look to see if there's some kind other mechanic you should run into/avoid or hope the healers have area heals at the ready and power on. Point being, in those cases there's not a whole lot you can do from any standpoint. Sure, you can make a tutorial of these things but the people that'd be doing them are most likely people who know full well about the mechanics and just want the prize at the end for participating.