There's some undercurrent from some commenters on AfterElton about straight actors playing gay characters, and every so often someone will say it outright. It's long established that gay actors played and play straight characters. There's certainly the wish on AE that there were more gay characters in movies and TV shows. There's much less fear that playing a gay character will ruin someone's career. There used to be a lot of fear about that. Being outed used to ruin all kinds of careers. There's thankfully a lot less of that.
I don't have a motor or sensory disability. I wish there were more roles for disabled actors. It doesn't offend me if an actor who doesn't have a disability plays a character who does, but I don't have a stake in it for the disabilities I specified. I do like for the parts to be written sensitively.
As for straight actors playing gay characters, my opinion is similar. I go with the majority on AE in being glad there are gay characters, and hoping for more. With another AE majority, I also hope for openly gay actors to have steady employment, or as steady as an actor gets. I wish there were more bi characters. I don't particularly care if the actors playing them are bi or not. That's the one I identify with.
I'd like to see more representation for all the groups I mentioned, but not stereotyped characters.