Please Separate Purists and Franchise Lovers!

In series with spinoffs, like Toaru Majutsu no Index versus Toaru Kagaku no Railgun S where there is a season of the Spinoff, like Railgun S, which has a lot of characters from the main series of Index including two of its main protagonists and which also acts as a premiere for some of the best characters from the main series Light novels who have never actually been animated before, it is frustrating and unfair to not let readers of the light novels and the manga discuss their opinions of what is happening in the animated series compared to how the characters look in the spinoff manga/ light novels/ main series manga. This is because: people who already have a contextual background for what is going on, should be able to have a very interesting discussion on the adaptation in context. Purists report fans of both series who just want to discuss some of the nuances of what is happening (while the franchise fans are not even spoiling things and using spoiler tags if they are) and purists become frustrated when people discuss both series because they say the spinoff series is stand alone (which it may well be for them). In my opinion, this is a pretty stupid problem and should be fixed somehow. The best way to fix this problem is to create two different versions of the particular anime for rating and forums. Make one version of the anime for people who have read the light novels and manga of the other series so that they can have their own objective space to rate the series and demonstrate how the rating of the series is from the viewpoint of people who know the material in context (which is a very valuable rating tool as well and is a better teller of the true quality of a work) Make the other version of the anime for people who are either purists or who have no background to the show and are just watching it. In my opinion, this will create much better discussions on anime and let people talk about interesting ideas during a show and definitely reduce the amount of spoilers that annoy new people to the show. It will also lead to a lot less hate between fans of one franchise and fans of the other franchise. Because there are many times when people should be able to mention things from another franchise in order to supplement knowledge of what is happening in an episode to get better context, but that can't happen when there are people who complain that having this information in spoiler tags isn't good enough... This doesn't just have to apply to light novels. This can apply to spinoffs for any show. I use Toaru Kagaku no Railgun as an example because even the writer of the Toaru Majutsu no Index series calls Railgun a spinoff of Index. It doesn't make Railgun a bad series. It is an excellent series. But this should be noted so that fans who want to discuss Railgun in the context of Index can do so, because it is even what the author wants/foresees... So... please help me cry out for better rating systems/forums when it comes to series with this type of special dilemma. Otherwise, Index fans and Railgun fans are just going to argue and no one is going to enjoy the show except the people who don't come to forums. Something which is the exact purpose of having these forums in the first place.