Yeah basically it went like this: 85 hunter with dragon soul gear - jade forest > kun lai summit > a little klaxxi and 90. Went to timeless, looted all the chests in a day and got to 480ish ilevel, missing only neck weapon and a second trinket. Granted, a hunter has a super easy time of this with camoflage/feign/pet tank. Used my free 535 token on chest, ran one scenario for the 450 weapon, and then ran all the LFRs through Throne of Thunder in hopes of a weapon and upgrades. Got nothing useful from all those raids (THREE non-set BPs!) except a neck that pushed me into Siege of Orgrimmar ilevel after buying a trinket with JP. Between those raids and doing Isle of Thunder dailies the first pair of legendary quests were done in a week, but I had to wait for reset to get Sha again to start the 3k valor part, bah.
At this point I gemmed/enchanted/reforged and hit SoO hoping I wouldn't get booted for doing dps below the tanks. Except I never did worse than top 8 on any boss and laughed my balls off for worrying about underperforming.
So coming in at 85 it took less than two weeks to reach the point where the minimum weekly effort is running Siege LFRs and advancing the legendary cloak quest, and doing enough other crap to cap valor (trivial). Everything else is pretty much optional, like working through Isle of Thunder/Timeless quests and the various storyline crap I've missed since 5.1. Which isn't to say there isn't more than enough to do, but given how long there is to do it, there's no pressure to log in for hours every damn day like before.