Can't wait to go celebrate DW 50th in 2017. Just waiting for DVC rates at Shanghai Disneyland Resort. It would be a wish come true.
I grew up in San Diego so DL is my sentimental favorite, but Tokyo Disney Sea is the best of all 11 worldwide parks (DL a very close second). You need to visit TDR (Tokyo Disneyland Resort) as the yen has dropped 20% since we went in the summer of 2014 and its way too easy to navigate the rail system and enjoy the food and culture of Tokyo. Hong Kong was nice, but it needs some love (additional attractions), Paris has the best Castle and Thunder Mountain Railroad (and a neat Phantom Manor), but the Studios need some attention too (thou the Rat ride is a step in the right direction). The WDW parks are great and getting better with recent additions and D23 announcements.
Like everybody else, I'm just waiting to see the details and locations for these additions. I believe there are more changes coming to DHS as the park has more available space that was spoken for during the D23 Expo. Also, don't forget that Paris, Hong Kong & Tokyo have additional land for additional parks (especially Hong Kong). We'll see in time how they will address some of the disappointment of missing attractions or themed lands left out at D23 2015. Need to go to that Expo in 2017, it looked like fun.............