Honestly, I am not enamored of the daily system. It feels too much like a chore, which might explain why Lyllea is not drowning in Frost emblems and why I don't have a ton of epic cuts.
Quite frankly I don't always have time to run the Jcing daily, much less the daily random. So I started thinking this weekend, and I came up with a solution that I kinda like...
Weekly Dailies. You get frost emblems for the first seven random dungeons you run. You get 7 quests from the jcing trainer, or the fishing trainer, and you have till server reset on Tuesday to get all or some of them done. Of course, you don't have to pick up all seven at once, you can get one, do it, and then get the next, but all seven are there, waiting for you to do them.
I'd also extend this to profession research. You can do it seven times a week. Whenever. Once you do it seven times, you must wait till server reset to do it again.
And for someone like me, who is a fit and spurt gamer (meaning that I play intensely for a bit, then wander off, then repeat), this allows me to do that. I can set aside a couple of hours and bang out all my "chores" for the week, then wander off to level an alt or work on Loremaster or even go knit.
Blizz does seem to be moving more to a weekly model, so I can hope they'll do something like this.