I'd really appreciate and love to see such diversity (People of color, LGBTQ, more women that aren't [dead] girlfriends or damsels). It is something sorely lacking within our games industry. Sure, we can point to recent games -- mostly BioWare -- that includes non-hetero characters and romances, but out of the hundreds of games that get made per year, a handful of titles in the last several years is not that diverse at all.
As a roleplayer, I prefer to have options. The more options there are to facilitate choice in who my hero/heroine is, and the world they live in, the better. There is nothing more disappointing in this current gaming landscape than to continue seeing straight white brunette playboys as main characters, or defaults, that continue their male gaze power fantasies. And only those points of view. Or a world that lacks diversity in race, sexuality, gender (in positions of power and class and roles and with actual clothes/armor on), and yet houses a cast of half a dozen or more straight white men.
"But that's how they're written. That is who they are." Or, "That is how the world IS (usually in defense of European medieval fantasy games)." No. It's really not. It is up to the WRITERS. They create the theme, the characters, the world. It doesn't magically appear out of thin air; they create it. And inclusivity is a very easy thing to enrich a setting, because not every person playing games is a straight white dude, or wants to play as a straight white dude. Garrus would still be Garrus if he were gay, Alistair would still be Alistair if he were bi, Samus would still be Samus if she were lesbian, and so on. Besides, sexuality is not so fundamental to a character that it somehow changes everything about a person's character and characterization. I like games where I'm given choices and diversity, it's the kind of world I live in.