I just use the isle mostly to grind mobs to get my 50 lesser charms these days. Seems more mindless than running around doing dailies and moving between daily hubs. Personally, I would prefer the Golden Lotus dailies, especially the first 6 as a way to get 12 or more lesser charms, but they've been removed, so its better than nothing. Overall, for me, the timeless isle is just a place to hang out when I'm bored waiting for an lfr que for the most part. It works, but is nothing particularily fancy. That being said, its less annoying than having to repeat a barely randomized set of annoying daily quests on every toon every week. Personally, I 'd rather just hack up a bunch of turtles for an hour or 2. I have mixed feelings about the idea, but its something to do, which the game always has to have.