For those that don't know: Mount Balrior Raid Expert is an achievement of the new W8 raid. To get that achievement you have to obtain 100 points for each of the bosses of the wing. You obtain one point for each person in your squad for whom it was the first kill time ever that they kill that boss.

1. It is a pyramid scheme. By design, only about 1/11 players can get it (at best).
2. It encourages people that don't wanna train to do trainings. They are irritated more easily and are way less patient towards new players. Because they don't wanna train new people, they only want to get the achievement.
3. It will only be harder as time goes on to get this achievement, further increasing the toxicity of it, as people rush to get it.
4. It makes non-training runs worse. If there is an underperformer, you can't kick him because people will get angry that they wont get points for the achievement and they will leave. If you don't kick him, you'll both waste time on easily preventable wipes and people will also leave because of it.

Training runs should be done by people that actually want to train. If you want to encourage trainings, you should reward re-clearing wings, doesn't matter if it's a training run or not.