Just remove that god forsaken Main Quest Storylock that keeps you from ANYTHING in the game and forces you into HUNDREDS of hours of tedious cutscenes - Where every 30. is actually a good one, that makes you feel epic and delivers you some excitement and the other 29 are "Hm, we should ask Person A, he is AT THE OTHER SIDE OF THE MAP. Walk!"

If the MQS wouldn't be mandatory to unlock access to areas and dungeons (Or, at least, not all of them) and if they would split it up (You can start the MQS in HW, or in SB, or in ShB - With a warning that you won't be able to follow what happened before) people could use the Roulette to level their chars, progress faster and actually play what they wanna do instead of being forced to do what SE wants.

But in my opinion, this is all part of the business model. Either play for months and pay your subscription or buy jump and skip options. Either way, you pay way more than just the game to see the newest Expansion.