Interesting development. However, I am getting flashbacks to Stranger Things UV kits and Jurassic Park topper-only game modes.
My prediction is that Stern will eventually stop producing Pro, Premium and LE versions of games. Instead, every game will have a fully-featured playfield, but the coolest features will only be accessible to those with an Insider subscription who have checked in to play. I can imagine upper playfields with gates at the entrance ramps which only open for certain players. If you're not a subscriber, a message on the screen will say: "To enter this playfield area, please purchase a Stern Insider subscription".