Personally I find that the lower tier content like dungeons and CT could definitely be a little harder. I would Really love to see a 24 man raid that is on par with coil difficulty. I don't find that coil is extremely hard or extremely easy myself, I mean it gets easy when everybody is geared out but it's fairly tough when you're a new group. I want to see more content on the par with coil/extreme difficulty but I also see the need for some easy content like dungeons and CT so in the long run I guess I just want more mixed difficulty content. Sometimes people want to enjoy intense, difficult fights and other times they just want to lounge and take it easy while gaining some progression and that's where the lower difficulty content really shines.