Graviele
You are the writer. This fanfic is yours. If there are loopholes or contradictions, even I would point it out. But that's not to criticise but it's just a way for you to improves. The points you pointed out, to be honest, it's logical. Readers do wonder about stuff and comment, that is mainly to understand Authors POV. Any other illogical unreasonable comments you should ignore.
all I can say to hopefully reduce the complaints is that this is an AU. Things that J.K. Rowling wrote in her canonical story, don't really apply here. the writer has taken some creative liberties and changed the Harry Potter world we know. we won't always like or agree with the changes but the writer has reasons for altering them. we have this huge modding community that does just that to the games we know and love. as you know some of the mods are also great, some honorable mentions, and some just down right bad they should be destroyed. All I'm saying is take it easy with the harsh feedback.
I think it is childish to have so many lordships as Goblins would have confisicated any unclaimed volt that is remain inactive more than lets say 200 years and Peverell volt probably merged with potter volt, plus, gaining control of school should not be possible the founders probably put countermeasures to stop any petulant brat which would be their descendent to take control of school from responsible adults. there are evidence about my climes. for example the poverty of Gaunt family which were the Slytherin dependents.