This article from Polygon talks about giving warnings to your players about clowns and spiders. In addition, Polygon asked Crawford if the Neogi were getting to get any "massaging" to tone down their evilness. The answer was... interesting. Crawford did not respond specifically regarding neogi, but did say illithids and beholders would remain evil, but some races would get the "I, Borg" treatment -- explicitly calling out Vampirates. Given that slavery has been a bit of a hot button, I will be curious to see where WotC lands of the space spider-eel slave traders.