But they HAVE taken her away from the series. If Leon saying it isn't enough, she HAS been taken away from the games for the last seven years...And, what with RE5 closing what the developers have called "Chapter One" of the Resident Evil series, and RE6 opening Chapter 2, or Part 2, then it's even MORE likely she's retired, because unlike with Chris, Jake, and Leon, there was no lead in for her character from Chapter 1 to Chapter 2...Also, whether or not you care for a definition doesn't make it ANY less valid. I don't care for your opinion right now, but As much as I hate to admit it right now, it's a valid opinion. That said, She HAS been removed from the games. Wanna know how I know. Cause she NOT IN THE GAMES. Capcom doesn't need to say "Oh, we've removed her." People play the games and notice SHE'S NOT THERE.
And several of those stories DID have relevence later. Resident Evil 3 has Jill get infected, which explains why she can't get infected with Wesker's new Virus in RE5, RE4 introduced the virus that would later be used and upgraded in RE5. Revelations gave us some insight into the BSAA that was no previously offered, so it was good for building knowledge to the player, and giving us a better understanding of the universe. But Still you're techinically right. It's story wasn't exactly a necessity. RE: Degeneration, DID need to happen, because that's what pretty much solidified Claire's retirement. RE6 is the beginning of What the Developers are calling Chapter 2, so while it didn't need to happen, it is starting a new Chapter in RE history, and that is kind of needed it they want to continue from THERE.