The GWG games are kind of odd nowadays. Obviously they must have enough data on their end to support the theory that they don't really need to offer decent games there anymore. Gamepass selection knocks it out of the park regularly, but GWG seldom has anything to write home about.
GWG is lame. Have both 360 games (Metal Slug is great, PR3 is ok), Xbone games are random. I was hoping after last month they'd start stepping up their offers since Sony is knocking it out of the park with PS+ lately.
I would think they would flesh out the gwg selections with the stuff they own internally instead of random discount bin games from other companies. Like last fall when we never got Forza Horizon 3 before delisting like everyone expected.
Whenever the Bethesda sale closes they could certainly offer some of those older games like Morrowind or Fallout 3 to boost some weaker months. Yes everyone already has played them, but it would be hard to complain too much about receiving games that packed with content. But offering them as part of gamepass that requires an ongoing subscription seems much more likely to include those old games.