Boss: "Hey guys, we're having problems getting healers and tanks to queue for heroics. Think of some ideas to fix this with the upcoming holiday." /leaves
Underling 1: "Okay, boss. Hmmm, well, the problem is that there are more dps than healers/tanks."
Underling 2: "But why? Are healers/tanks not as fun? Are they more difficult?"
Underling 1: "Not sure, but clearly, they must not be as enjoyable. We should give them an opportunity to do something else... like dps. DPS is more popular."
Underling 2: "Oh, good idea! They'll have a holiday from tanking and healing."
Underling 1: "So we'll create a holiday mechanic that requires EVERYONE to DPS. It'll be great, and when everyone burns out from 2 weeks of nothing but DPS, there will be more tanks and healers."
Underling 2: "Could work. If nothing else, it will highlight the need for more tanks/healers and force more DPS to respec by the end of it. Let's try it!"
/implement Lovely Charms patch
...seriously, what else could they have been thinking? I'm baffled.