I'm pretty sure it goes for everyone in the cast. It seems to be the new standard. Everyone must be pansexual otherwise someone in the audience will take it as a personal offense and a form of discrimination.
Playersexual is a term I've heard bandied about, and I like that one myself. I personally lump the lack of preference into the 'bears and male voices for girls/female voices for guys' thing. Some people will want it, most won't care (my camp), and most importantly: don't have to code gender checks, so you don't have to code as much, so less code to break, and less work!
