Question is will PotD give xp for lvl 60 and higher? And then the amount of xp. I am sure than 800k xp for floor 41-50 is going to be very small when SB comes out. So they will have to adjust PotD to give out proper XP to help players.

Also the new fates in the new zones. Hopefully they wont make the same mistake with HW and have low xp at the start.

These 2 things will heavily influence queue times. Then you have to look at all the people who are going through as a dps just for story, not leveling.