1. They use swords on Hogwarts ground
This really shouldn't be a thing. I have seen multiple instances in which swords or staffs have been used. These kids are 16. They shouldn't be dueling in Hogwarts, or any place really.
2. They own a house
They are minors. Legally they cannot own a house. Heck, they can't even live by themselves. They need adult supervision. I don't care how it was justified, it shouldn't be happening.
3. This is the big one. The Camp Half-Bloods are inspired from another book series.
I hate to bring up old issues but in this case I must. It was determined a couple months book and characters inspired from other places shouldn't be a thing. It seems the Camp Half-Bloods slipped through the cracks in the rock.
- I'd also like to clarify since I think this would be brought up: This is not personally motivated. I do not want to shut down another dynamic because I can't have mine.
My Proposed Solution
Those are my thoughts. Thank you for your time.