Part of this stems from the idea that they are the cool new toys and that eventually as new datasheets get added to the Space Marine codex there won't be the room, so something has to go. Will that be the classic space marines of old? A lot of people think that is going to be the case and are understandably unhappy with the idea.
I even put forward the idea, partly in jest, that Codex: Primaris might come about because Games Workshop was unable to copyright the term "space marine" several years ago. Although I was joking, it does have hint of a possibility about it.
However, I personally do not think that the old space marines will go away. At least not anytime soon. Although nice additions to the space marine codex, the Primaris just do not have the options to be as variable as their regular battle brothers. They don't have devastators or dedicated assault marines in the same way. Some will say that the Primaris options are better but I feel that they are lacking the same punch. You'll always need the regular marines and the Primaris will fight well alongside them.
However, this is Games Workshop, and while in recent years they have become better in how they are handling the business, they are still a company out to make money. Forcing everyone to purchase a whole new range wouldn't be beyond the realm of possibility but I cannot see it these days. There would be too much of an outcry from space marine players.
So, what are your thoughts?
