Valve will loose competition quick if they wait that long. Asus is probably already working on a rog ally 2, legion go came out and is packed with features. Aleast release a steam deck with the newest GPU, ram and a 1080P 120hz or 144hz oled or QHD 500 nit screen within a year or so from now.
I got my deck 2 months ago, I haven’t had any issues with performance so far at all, this thing continues to amaze me. Sure, I could buy something more powerful with different specs and gimmicks but it wouldn’t be a steam deck with the directed support of Valve.
I think this product category is still in early days and I think Valve are the only ones that can do this right and provide the long term support that we need, no need to rush.