I like creating campaign classes, etc., and I’ve created a bunch of races and classes for my Crimson Sun campaign (built using the AD&D 2E Dark Sun setting and books as a foundation). I’ve also got a few Dragonlance classes and a race, so far.
How careful should I be about posting ACKS material inspired by non-OGL/SRD supplements from the TSR era? Is it sufficient to call them Mantis-Men and Half-Dwarves and Dragonmen? Better to just not do it? There’s no text or tables copied, and AFAIK only the presentation of game rules can be copyrighted, not the mechanics… but obviously I don’t want to either be a jerk or to get Autarch in any kind of hot water, even potentially.