Again, incorporate or encourage this process of learning into the solo duties through the creative use of mechanics or systems that help to encourage the process of learning. It should be something that has no bearing on other people, especially if it is something that seemingly does potentially punish other players.
If we want to look into a direction that involves encouraging learning, whilst still incorporating them into the dungeon then a bonus exp/tome checkpoints could be included to help encourage this. E.g. you hit the goal of doing x, y, or z then you get a checkmark that provides bonus exp or tomestones. This could be anything from the execution of an ability a certain amount of time, or a limitation therein. Then you have the point of expanding that effort from a personal perspective without necessarily involving mechanics that seemingly punish players for bad play, but rather rewarding people for good play.
My issue with the suggested list is it wasn't rewarding players for good play, you were effectively punishing them within the duty itself for not performing up to a baseline.
I'm all for a new context that encourages different behavior, but forcing this process, or punishing for not meeting this behavior baseline won't sit well with players. EXP multipliers to individual bosses for correct, proper, or efficient execution of mechanics, be it fight or job mechanics would be a great way to start.
I don't want to have to worry about that healer potentially killing themselves or the tank, just because someone decided that adding a stacking mechanic to GCD heals was a great way to try and force players into something. Especially when more often than not more damage on the bosses will translate to faster kills, which means the boss does fewer mechanics and overall a smaller window for mistakes. So this rides as much on the DPS playing their job correctly in addition to the tank, yet someone wanted to propose the bizarre idea for potentially punishing the healer, or potentially making their life even more difficult for trying to compensate?