I have a completely unfounded theory about GOT...
Many (most) recent Sterns have an obvious thing to shoot for (Sparky, the wrestling ring, drops in Mustang, disc in Tron, Iron Monger, etc) which is great for newbies. The GOT Pro does not have this. It has complex rules that require deep understanding and ball control skills to go with it.
I think putting a Premium on location makes a lot of sense because newbies are going to feel really rewarded by getting to the upper playfield. "...and then I got it up there and started fighting the dragon!"
Without that upper playfield - I don't think there will be any obvious and rewarding moments on the GOT pro for casual players.