Ah, I've been working on my next idea so I didn't notice your reply until just now [@Synonym].

It's just a bit too late, but thanks for the feedback anyway. I honestly hadn't considered those things at the time and now I wish I did 😅 

I didn't have a central antagonist in mind, but I was thinking that anytime a Tainted managed to complete their transformation into a dragon, it'd basically be like a resurrection for whichever dragon the blood originally came from so anytime they popped up, it'd be a bad guy of the week sort of thing with each having a different game plan.