There was an exciting and all too brief a period in the history of the Wikipedia when it wasn't spammed with ugly tags disputing the relevance, citation, neutrality, copyright, and importance.
Yes, but then people started actually reading it.
You go into a prequel wanting to see fictional history in action and instead you get something completely different that pays no regard to fiction that you loved.
You didn't go into a prequel though, you went into a reboot. Now I'm not saying this invalidates even the majority of your criticisms, but it does invalidate the comparison to the Phantom Menace and complaints that it will alter shows that come after. It's a reboot because they will probably make at LEAST one more film with this cast and don't want to be constrained by the previous history. That in and of itself is not a terrible thing.
You will lose an important tape file.