burnable
If you don't plan on doing a crossover sequel, can we at least get a time skip? That way we could see him as an adult who has worked through most of his problems and has a family. We could see if he ends up with Hermoine, another character, or an OC. Similarly, it would be interesting to know if he chooses to become immortal as he said he already figured it out, or if he chooses to be mortal realizing how terrible it could be if a large portion of his friends and family stay mortal.Finally, if you do choose to write a crossover sequel, can he go to a game world or something of that nature? It would be interesting to see how Harry with his Systemic Magic interacts with an actual system that has options like seeing his Stats, Leveling Up, Skills, Classes, etc.
Hey Burnable, are you using the same "magic is everywhere" like you did in the STG FF or is magic centered only on earth? If so then you can build an observatory for the centaurs so they can observe the stars in more detail. Also, just an idea, but make some floating waterways for the more aquatic magical species to move around on the islands. And, just as a passing thought, what about making the underside of the islands into towns as well with inverted gravity so nocturnal creatures can roam about at any time. Plus how cool would it be to look up (down) and see an Ocean overhead.