There is nothing to fear
Awesome question. The Thu'ma were individually not very impressive. They were very similar to humans though admittedly the best of us. Physically they were like supermodel gold medalist athletes, mentally the average person would make Einstein or hawking look like a child by comparison. It was their collective might that was scary. Their population was spread across well over a billion planets with each one having at least 5 billion people on it. They had technology like the Great Igniter which could churn out a star in just under a minute, or the Centrifugal apparatus that could be inserted into a galaxy and manipulate its spin enough to move the galaxy itself. Some of their technology still persists to this day...like the boontz supervoid which is actually a massive stealth field encompassing several thousand galaxies which is incidentally where the Eve'les developed safe and sound. They even had a network of portals allowing them to travel to and from the source to use as FTL travel technology. The reason the Thu'Aan were so dangerous is because their connection to the source allows them to manipulate this technology with a thought or even jam up the source and prevent them from functioning altogether. Thats how they beat their creators, they took away the greatness of their technology and forced them into a conventional warfare scenario that they couldn't win.A very interesting concept. I would love to see it flesh out, but I actually wonder what the Thu’ma were capable of. Understandably the plot is very complex but for a dnd x 40k it really puts it all out there. Really nice plot that’s really all I wanted to say.
Yes of course dragon females have a very important role as they are the only ones besides bahamut and tiamat who can actually create true dragons naturally. Their abilites are exactly the same as their male counterparts though on average they are about 10% smaller than the males. This size difference does little to effect their power output however and actually doesnt factor in until they are at least 3000 years old. Whats more impressive dragon females can actually produce dragons stronger than themselves if their mate is up to par. Thats why the dragon faction has such high hopes for bastion ans his two brothers. They are the sons of a very powerful dragoness and the defacto god of dragons. He isnt quite there yet but they have high hopes for him. Perhaps you could be a drake created by bastion or one of the true dragons with him, or perhaps you are a true dragon, or a human female waiting to become a drake. Either way it will be a very beneficial addition to the story.Interested if you need any female dragons