I ended up hooking up my usb-c dock to the steam deck so I get external display + keyboard + charging with one cable, the mouse is through bluetooth. I just boot the Deck in desktop mode and it rules.
Well, it's still Linux so, y'know. It works well enough and it's basically all I could have ever asked from the Deck: a console and also a small desktop-like when needed
also I tried playing it with my MX Ergo trackball and...I think I could get used to play FPS like this?? It's kinda nice to be able to make quick turns just by flicking the thumb instead of moving your write/arm
I'm struggling a bit because I suck at FPSes with a controller but Neon White rules