Timeless Question

I was off sailing for the last month (from Booty Bay to Menethil Harbour), when patch 5.4 arrived and the Timeless Isle was discovered, so I only got to the Timeless Isle this weekend. Since then, I've spent all my time there, following the legendary quest-line. I'm not sure what to do apart from that, though. The gear that's dropping isn't better than I already have. I can see that it's great for gearing up alts quickly, but for me, what is the value of these Timeless Coins, or reputation with the long-dead Emperor Shaohao? It's not a rhetorical question, I haven't learnt enough over the weekend to figure out what I should be doing next!