Considering that YA fiction is probably the best selling fiction of all time (thank you JK), I'm not sure being in the YA genre is a bad thing.
But, just a thought about cutting stuff for "modern sensibilities" and the like.
Take the slavery in Dark Sun. Some are saying that it will be cut because we can't have slavery in works. That's not what's being argued at all. Slavery in a D&D product is perfectly fine (read the Monster Manual if you think it's not). What isn't fine would be to celebrate slavery. To try to justify it somehow and make it acceptable or even just accepted. Slavery in Dark Sun is evil. It's shown (and has always been shown) to be evil. There's no shying away from the horrors of slavery in the setting. And, making slavers the bad guys in adventures is pretty easy.
What would be problematic would be an adventure where the PC's are hired to go around to villages, kill all the males they find, round up all the women, bring them back to be sold into sexual slavery and then rewarded. But, fortunately, no one is publishing that adventure.
OTOH, you look at kender kleptomania. Here we have mental issues being paraded as parody and celebrated. They're not mentally ill, they're just "that way". They were just "made that way". It's diminishing the actual issues that mental issues cause in the world and those who suffer from them. Psychotic as hero instead of someone who is suffering. So, yeah, kender are problematic and, in a future Dragonlance product, you will probably either see the whole kleptomania thing fade to the background, or be seen as a curse. The Greygem didn't do them any favors when it twisted their minds and turned them into Kender.