So I did like this series yes. It was good and fun.
However!
I think the Author sort of probably without intention made the opposite story in which they were trying to tell. This was the MC story of standing up to the corrupt overlord government and setting people free to make it safer for mundanes. All that other jazz too.
Nice, but....The author by the end of this book sort of made it so GAR and Duvall had a point. Sure the vampires had to go and there was corruption. However [again], Some of what they did was needed. Yes the MC was a good guy and so was Gale. So we don't think about it but, what if they weren't. What if the MC had been a serial killer or anarchist or Gale. Imagine what someone with Goo could do in a city, kill the whole thing just with walking through it? How about the MC portal box planet cracker.
With more portals to earth and more mages being born, without GAR to register each mage affinity and train them, any random criminal or bad guy can learn those powers and others. With them having a portal world to run to now, whats to stop them from destroying earth as a whole? I can see why Duvall said what he was doing was forbidden because it only takes one space mage to destroy worlds and portal realms. Hell just to open a portal to a horror world and leave it open. I can see why she is scared. The MC is good but that is with 6 portals and mage houses and GAR controlling them. What happens when a mortal in the Middle East and part of ISIS or something gets space or healing or something else power and sets it against the world to be reborn for his sacrifice?
Space mages were rare compared to how many mages but with more mortals imagine how rare they'd be with say even 1 billion mages. Out of 1 billion mages with no GAR to register and train them and see the problem makers, have forbidden magics. Well someone is going to turn out bad and spoil it.
So sadly, as much as I liked the series and story. By the end for the safety of the world and portal worlds, honestly it would been better if the MC hadn't learned what he did, he'd gotten trained and mages were still all registered and monitored. The servitude of GAR was bad but a draft to have him trained in how to use his magic and made sure he wasn't a danger or any mage was reasonable. It's the only way to keep a rogue mage from destroying the world. Which at the start seemed silly but by the end of the series, seeing what a mage could do. That was far less silly.
It's just healing and Space mages, so rare you say? Okay what happens when a water mage learns to split water molecules? Sure due to blast size most likely that will be the end of that mage but still only takes one experiment then boom hydrogen bomb. Earth Mage sets off Yellow stone. Ect Ect..