User blog comment:Supahbadmarine/Official Canon Policy/@comment-4608429-20130228231116

Could the Tau get Geen-Seed and, with much experimentation, create home-grown Space Marines? They would obvously have a few differences from ordinary Space Marines, for instance they would be at a disadvantage with mindset and organ controll, but they would also get snazy Tech too.

And if this is alowed I'm calling shotgun/bagsies/whatever else there is on the idea. :3