I've filled my Series S up already and last night had to delete a game as a Gears 5 10GB update took the last bit of space. It currently has 15 games installed but half of those are little games (Hotshot racing style) and I haven't installed any massive games like Halo or COD on it. The biggest is Forza Horizon 4 at 71.4GB so storage is going to be an issue for most gamers, maybe not for those that play 1 game from start to finish but to me one of the benefits of gamepass is being able to dip in and out of different types of games so I'll add some external storage at some point.
It would make sense as a gamepass console to enjoy the back catalogue if they start updating some of the old games so they run better, I see the 60fps boost thing so thats promising but really they need a resolution bump.
It's hard to say at the minute as developers need time to bring games out that make use of the new capabilities but I'd say the Series S is more of a 1.5 Next Gen rather than 2.0 like the PS5 and Series X. Great for parents and those just wanting a cheap gamepass machine (although once cloud gaming comes to TV's it could lose some of that market) but for me its clear that most of the games available now do look much better on the Series X or even One X due to BC enhancements. Not enough for me to go out and buy one (if I could find one) but it does make me think maybe I'll play this on the pc instead.
First world problems hey
I took a chance, I can sell it without a loss so it doesn't really matter but I am starting to think I probably should have kept the One X until some big hitting next gen games came out and then bought the Series X next year.
That said maybe in a few months time when we have some new games on gamepass I won't care about missing out on the one x enhanced versions of older games.