No such thing as stupid questions, but I think you’re correct about how that works. You’ll keep the Primer because you’ve already bought that and it’s a “for life” product. That’s my understanding! I don’t work here though lol @Troy can confirm.
The other perks are the AWESOME interviews. That’s probably what I use my subscription for the most. I love seeing the close ups and also the great tabbed examples so I can (attempt to!!!) play along with some of the best players in the world.
You also get guaranteed feedback if you want to create a “platform” critique. I think you actually lucked out once or twice and Troy commented on your playing when you put a feedback request here. When you have a membership, you get guaranteed feedback from Troy’s instructor team. Since getting that feature up, Troy’s left the forum critique requests up to the community largely. Members are encouraged to use the “platform” for critiques.
You also get to review these “platform” critiques that others have submitted (as long as they were marked as “public”). You won’t be able to add comments, but you’ll see how the instructors have guided others on their picking quest and there’s lots of little great nuggets and tips. Super useful for our own playing. Not sure if you’re into teaching at all (most guitarists who are serious end up doing some form of it) but I see these critiques being useful for ways to help us teach others.
To me, MiM subscription is far and away the best value of all the products here and why I keep renewing mine.