Oh, good ones!
Mercedes Lackey: While her inclusion of gay characters was and still is important to me, now that I’m an adult it does seem more than a little fetishy especially because there are lot’s of beautiful gay men~ but only one lesbian couple in the whole Valdemar series, and they’re side characters anyway. In her newer works the gay representation also seems to have disappeared other than being mentioned off-hand (and it being set in the past is no excuse.) She does a lot better than the vast majority of fantasy authors but it hasn’t evolved enough over time to be acceptable to me.
Mythical creatures: I’m not really sure if this is controversial or just weird but if you have a dragon character they should not be able to drink alcohol in my opinion (even in human form) b/c dragons are reptiles -> cold blooded -> alcohol lowers your body temperature. That’s how I write them, at least!
I don’t know very much about the stuff you follow so I’m gonna go with Dragon Prince and do a minorly controversial opinion: why is everyone so interested in drawing the one elf dude? He has like no personality. All he does is be an ass and then get imprisoned. He says like 15 lines in the whole show. I’m not that into it anyway but there are better characters to draw.