> not a simple display of features or quirkiness (1400 puzzles, 10 years of dev)
I think a 'number of features' metric can work but only for players that already know and like your game, where an expansion with 'Five exciting new areas' is understood as something that they'd enjoy, and I agree it feels odd for a new IP.
Similarly, saying how many years it took isn't remotely a selling point for a new player. If you'd been following the development process then you probably wouldn't care, and if you hadn't you also probably wouldn't care.
It does seem awkward to have to design a trailer for a pure puzzle game, something that essentially relies on things going on inside a player's mind for fun, which by definition won't be visible.
Baba Is You did have something you can show potential players, but I'm not sure there's a trailer that could convey The Witness' 'Oh, I wonder if I can...' moment as it's a very internal experience that comes from playing enough to get to that point.
The Witness was, however, visually beautiful (IMO) and its symbol-based language let the trailer keep an element of mystery and intrigue. Order of the Sinking Star, while potentially also a fantastic puzzle game, seems to not be able to hide anything by nature of it being very clearly a Sokoban-like. Even if there are as-yet-unseen depths to how it treats the Sokoban format, the trailer needs something to work with, and while I think it also looks lovely it perhaps doesn't have the The Witness visual appeal or mystery to draw people in.