I remember seeing one of the CEO's of the budget flights in an interview saying how he was planning on spaces for standing flights, where you'd literally stand up the whole journey like on a crowded bus.
Then more recently there's those two-layer seats being planned where seats are in a zig-zag, with the person in front being raised so their arses are your head height, to squeeze more in... hah.
I just had another miserable budget experience im gonna rant about too lol (although the flight itself was technically... fine)