I'm gay and this all sounds tacky and flamboyant as hell.
Especially all the different "flag" sprays. When did sexuality and gender politics get so confusing and circle-jerky?
Dorothy skin for D-Va would be ace, though, and that Mercy idea is actually pretty cool.
Making your entire identity revolve around your sexual preference is cringy on its own, but I really hate when people look at drag shows and all these over-the-top reality TV personalities chewing scenery for the camera and think: "Yeah, that's a good representation of gay people."
I think my ideal "Pride Event" would be a bunch of skins of characters in casual everyday wear with tiny fine print that says "Also, he/she/it(omnics) might be gay, maybe! It's not really any of your business!"