The problem with dailies is a perception one really. It feels like a grind because it has to be done every day to be of maximum efficiency. There was a huge difference for example, between awarding random dungeon rewards once a day, and 7 times per week. When you let the user pick their own pace, even if you cap that pace, it feels more optional and less like a chore. Having to find the time every day to go grind through those abysmal golden lotus dailies seems like a chore, but I've spent hours grinding things like timbermaw hold rep that were far more tedious but felt far less like work because I wasn't "falling behind" by taking time off from them.