As amazing as this would be, I highly doubt that it will ever happen. Which is really unfortunate. Pearl Jam can sell out multiple days at The Gorge on their own, plus they are rumored to be playing 15-20 dates through the winter in the eastern U.S., ending in Toronto the first weekend in May. If the rumors are true, that's a hefty tour for them and I just don't see them hitting The Gorge immediately after that. This is also their 25th anniversary, so they will more than likely have some sort of bash in the PNW later in the year.
Just my thoughts on the subject. But being that Pearl Jam at The Gorge is the #1 show on my bucket list, I would like you to be right.
If there was any festival that could get them, I like to think it would be Sasquatch just because of the PNW connection. Mike McCready played the national anthem at Sasquatch a couple years ago, so that's a step in the right direction. But I do agree, the odds of it actually happening are next to nothing. Their propensity for 3+ hour sets and reputation as one of the best live bands in the world exclude them from almost all festivals in general, but it's fun to dream.
If we can get Foo Fighters, Pearl Jam shouldn't be a problem.