This post will probably be against the grain of community sentiment for the double xp WvW event, but I am going to try to make my points regardless of whatever opposing views follow in this thread.
1) The no-downstate was a very significant nerf to loot quantity. So many people tag downed players in zerg/blob/group fights. To remove it from the mechanics ended up removing one of the very big, very fun reasons to play WvW: lootbags. Lootbags are only rarely high quality, but they are very useful "low quality" stuff like crafting mats and silk and (god forbid) mithril ... way too much mithril ... unless you want weapons via Grandmaster Weaponsmith Marks, or third-generation legendary weapons.
2) In principle the Magic Find boost should have counter-balanced the point above, but I found it was insufficient. I have been running around for the duration with minimum 400% MF and have not seen one single exotic drop, and no ascended drops (outside the ubiquitous Bloodstone Dust/Dragonite Ore/Empyreal Fragments). And so the counterbalance to the reduction in loot quantity was not so very effective. Of course, there is always someone who gets ascended loot and who can "prove" me wrong, except that it will never be proof. Only perception. Just like my perception.
3) The no-downstate mechanic favours the experienced and active PvP sub-population of WvW. Those with Gold+ PvP rank (or perhaps Platinum+). Those capable of 1v2 or 1v3 play. WvW has always been the super-casual game mode that anyone and everyone can play, with their un-optimized builds/gear/experience (ask Mighty Teapot about how many times he sees people running around in greens, or non-lvl-80). people like me, who avoid the PvP game mode because we are too slow or too bad or too casual or too disinclined to optimize and are the ones who do not enjoy the lack of down-state. Whether this makes a majority or minority is unknown to me. Maybe people want to purify the WvW population of the casuals. But I posit that this would be a dangerous move; the game mode needs more people, not less.
And so I have found myself doing non-WvW stuff for a chunk of this week. I will jump right back in after the weekly reset, of course, but wanted to give my respectful 2 cents while I wait out the end of the event.
In the end, I am of the feeling that the event was rather divisive, with strong feelings for and strong against. Such a division would not be a healthy long-term result for the WvW game mode, and is workable only for short-term tests.