I can do emulation with a regular keyboardless rpi connected to my tv. You want portable emulation? I do that with a gpi case, and runs on batteries! This weird desktop approach is what doesn't make any sense to me.
I could stream a beefier PC to it with sunshine/moonlight maybe and use it as some kind of really light desktop, but still, why would I do that and not just have the beefier PC in said desk.
This is a cool piece of tech but I can't really think of real world use cases besides looking cool and having that weird but cool computer-in-keyboard retro vibe. I had the same idea with the 400.
Maybe the best use would be some sort of super portable thin client, but looks very capable to be just that. Having a battery would have made sense too, for portability. Any out of the box way of connecting it to a smartphone screen would be great too, even if it's just tty.
Maybe I'm just being obtuse and just want a laptop, but the whole thing seems impractical to me.
This is more like battle royale polyamory