Big.

I think the fact the switch and steam deck are from the companies they are matters more to consumers than seeing oems giving it a try after the deck. The gpd win systems that were tiny laptops with controllers were weird but predated the deck, they had so many people curious of them but not buying.

if it a portable gaming device it should have standard gamepad inputs, analog triggers, gyro, a trackpad, back buttons, and auxiliary inputs. it should basically have most of what the steam controller has and more. so any game can suit it comfortably.