If you could buy an upgrade in the shop that makes it so you do not switch spec when entering a dungeon. i can heal as dps paladin just fine and i can tank as dps warrior, druid, paladin and death knight. But obviusly you can not have everyone be able to enter without automaticly swaping spec becuse there are those who are playing for the first time or are still realy new or have problem learning.
So the item would be like (Remove spec restriction) and be account wide, i would pay 20€ for that