What does Heavensward actually bring to the table as an expansion?

[Evtrai]

There are plenty of NEW/RETURNING PLAYERS who need/want to run the content that is 'old' and 'outdated' to US!
Old world content has only been replaced for those of us over level 52 or so. Everyone else, and according to that census over that means 60% of the player base, is less than level 41, and either is or will need to do the old raids and dungeons.

What begs to ask you this question, if the 60% of the player base is 41 which is a significant lower level, doesn't this mean that these are inactive players? I mean, leveling post heavensward to 50 even if you don't have an expansion is pretty much a joke.