Why can't Dungeons be longer/harder, but more... piecework?

[Nedkel]

Short answer is the casuals.

Long answer; the devs would rather cater to casuals over midcore and hardcore players(which their main demographic is midcore and hardcore playerbase).

Their is nothing wrong with catering to casuals so long as it doesn't come at the cost of the midcore and hardcore playerbase, but from a business perspective, if I had to choose between excluding casuals for more midcore and hardcore players to earn more money in the long run, I would choose the midcore and hardcore playerbase in a heartbeat.

But they are giving more to hardcores that they do to casuals.
Casuals only have now 1 dung per patch and 1 alliance raid per patch which allows them to get some significant rewards.