I’m pleasantly surprised with how well Grim Dawn and Rimworld play on the deck, tweaked both a bit for personal preferences but actually solid experience. I did cities skylines and ksp on the og steam controller, I can’t get into trackpad as trackball though on the steamdeck for whatever reason, did that with the steam controller for warframe, was great to be able to turn quickly on a controller.
No trackpad really would be a non starter to me, just adds so much flexibility, and the haptics do totally work for me.
Oled is noticeable larger, on paper it’s only 0.4"diagonally but it’s obvious having my lcd deck beside my partner’s oled one, plus the oled one just looks a lot nicer. I’ve had more issues personally with some games not letting me scale down the ui, rimworld is totally playable on the deck but I find the interface gets in the way.
Steam deck xl could be an idea but you’d probably have some weight/ergonomics issues. Deck itself already dwarfs my switch lite (and is more comfortable to use…), do find I prefer some games on a larger screen, but it does usually work well at the distances I hold it.