Might be unpopular but I'm fine with the way marks are being handled in TTK. I like that they're account wide actually because it is less pressure to run 3 characters, which was just annoying and honestly, for someone like me far too time-consuming. I think the game is much friendlier this way and still proceeds at a good pace. I've been mainly using marks to infuse gear and I'm hitting high light levels and getting plenty of gear from drops and quests. Once I'm done infusing, I'll work on saving to buy specific gear.