I don't understand why people seem to keep mixing up both potions.

"yeah people are bad and will be bad even if they level jump and going through the MSQ won't change that"

Except... if you just level jump you will stil have to go through the MSQ. If you buy the MSQ potion you still need to level the old fashioned way unless you buy both.

My concern is if they jump to level 60 what kind of motivation will they have to do the <50 level dungeons or old raids? i mean if you have the newb A and the newb B. Newb A bought the potion, newb B didn't. newb B will be trying to unlock dungens the old fashioned way but newb A is now focused on getting his healer / tank to lvl 70, won't that mean that Newb B may suffer through even crappier DF queues? I mean we already have a shortage of tanks in DF... Isn't there a chance this might actually aggravate it? Won't this also scare the new people away from the game?

To be honest it's quite hard to tell how this will play out.