IDK - not a fan of the idea of using a Disney animated cartoon to push an agenda, even if it is a good/valid one like this. The problem with making an animated Disney film with a lesbian Princess is that this would rapidly overshadow the story being told in the movie, and it would be very, very difficult to make it feel organic to the story. A smarter move to me is to do something similar to as people pointed out with HTTYD2 (which I thought was pretty obvious that they were indicating the character was gay). In other words, have a gay character but don't center the story around the character being gay - as is typical with a princess story in which the story revolves at least partly around falling in love - Frozen worked well as a sisterly story, but still the center of the story was Anna and her relationship to Hans and Kristoff.
I suppose right now you could say "Elsa is Gay" and it doesn't change the story at all. However, if you have a added a scene in the movie where Elsa comes out, it doesn't add anything to movie and again would merely distract from what the movie is trying to say - which IS the message of tolerance that those in support of this idea are trying to bolster.
Again, I circle back to that animated kids movies are not the place to push agendas of any kind. (I don't want to see white supremacy or WWII genocide represented in my Disney movie either.)
