Thri-kreen aren't gonna happen, ever. Same goes for Giff, Xixchil, Hadozee, Dracon, Half-Giants, Minotaurs, Centuars, Shifters, Warforged, Changelings, Hurwaeti, Rastipedes, Avariel, Ghostwise Halflings, Trolls, Orcs, Fremlins, Aranea, Rakasta, Lupin, Tortles, Saurials, Pteramen, Lizard Men, and so on.