How many times have you gone through a Random Dungeon/BG with a skill you need to level up a bit on your bar to get that big boy XP boost to it, only for due to some last second miscaculation or some unfortunate timing, end up getting XP on the wrong bar and wasting all that Xp on absolutely nothing? I tell you when it happens to me it make me quite upset.
In a perfect logical world where stuff make sense what bar you are on wouldn't matter but i'm guessing for some reason even though its probably a pain point that has been addressed in the past by some people it hasn't been fixed, so lets try another possibly easier solution?
Can the XP rewards for completing a random Dungeon or BG be granted after you leave the area, not immediately upon completion so that you can make sure that whatever bar or skills you need to have ready on you bar are so they can get the XP. Or better yet maybe they could be a little character bound XP consumable given to you in the mail along with your other rewards, like other MMOs tend to do?
I try to be mindful of which bar I'm getting XP on but sometimes circumstances arise where you are just on the wrong bar and the instance ends abruptly so hopefully this will help those who like to use those big XP boosts to level their skills. Honestly I'd rather just get XP on both bars at all times but I figure if it wasn't in the game from the start the programmers simply don't want to or cant do it for some reason.