One of my favorite podcast about games, Gamers With Jobs Conference Call, recently went through their top games for 2016 and Planet Coaster was discussed.
The discussion touched on the longevity and DLC-potential of the game in a very positive way.
You can listen to the whole episode here and they start talking about Planet Coaster around the 45min mark (after Doom).
I also did an audio outtake of just the talk about Planet Coaster which you can listen to here.