We should get exp boost in the game.

[BlitzAceRush]

It doesn't exist. Tales of adventure from the cash shop exist and that is a different issue all together. There is no way to skip the story in the game without paying more for the game and that is something that should be fixed.

There's nothing to fix, they don't want you to skip it, if you do anyway then you can but at a price, that's enough.
Besides you can look at it as saving you some sub money as you're simply paying up front for what would have cost you sub money to do the normal way.
Do the MSQ or pay to skip it, the option is there, you no liking it dosen't mean it isn't there.