Dungeon exp being boosted was a nice change, but I still think SE Could do one better.

Create 10 new instanced areas. But unlike dungeons, make each a small sectioned area of an actual zone.

Pack them with hard dungeon worthy trash and nothing else.

Then let us que for them in groups of 4 or 8 for the sole purpose of Exp Partying. We que up, join the instanced area for level 30-35 then strategically tackle mobs in the area to chain exp and level up.

15-20
20-25
25-30
20-35
35-40
40-45
45-50

So 7 actually since the first dungeon is at 15.