One that works

Less tongue in cheek, there's not much I do with a computer that a gaming rig wouldn't manage just fine. Don't do anything like video or photo editing, which is about as hefty an other hobby I can think of, hardware strain wise. OS... honestly, probably win10? Haven't looked at 11 much besides vaguely osmosising some stuff about renting licences and whatnot that makes me kiiiinda' leery. I sorta' want to stop using MS junk, but also aren't really at a place life wise where I want to go through the process of learning to use a notably different OS, particularly one that's notably iffy (if better, these days) on game compatibility et al. The less frustration and effort I have to deal with, the better. Can always dual boot later on :V
Similarly, I probably really should build one myself -- I don't exactly have the funds to legitimately justify the luxury/inflated price of prebuilt -- but I also really,
really don't want to deal with the frustration or potential troubles of building a computer for the first time while I'm juggling all the other shit I'm dealing with. If it weren't for steam deciding to fuck me out of my couple-hundred bucks worth of library I'd probably hold off for a while longer

... anyway, beyond all that, the only thing I've really internalized as desired is the vague hardware specs mentioned. Having a CPU that's stronger than 3 ghz is my proverbial man's romance right about now. I've never owned a computer that went over 2.3...
Look up something like VNC (there are many others out there, not sure what the current state of play is with them though) for using your laptop as 'dumb terminal' to any new hardware. (Which, assuming you don't stash it in some air-conditioned cupboard/rack elsewhere, isn't actually going to save you trouble with space. Desktops/underdesks are just better value if you don't think you're going to haul it about at all, including making it far more possible to incrementally/radically upgrade their components in future.)
That'd be better, aye. Had seen mention of networking stuff together, but that's an actual name to put to software, so thanks, ehehe. Probably a good better idea than the nonsense I was thinking about, so long as the "console" piggybacks the actual computer's graphics without issue.
The big thing space wise is I'm basically using half my bed as my "desk", and my room's small enough there's not really a better option. The ideal is basically a tower beside the bed with console-ish whatever sitting where the laptop currently is. The problem being current monitor design and the apparent
utter lack of things-not-stupidly-priced that would keep a LCD monitor from falling over while standing on a bed mattress (as old/cheap as my own, anyway). Similarly, there's not really space for a stand with an arm or particularly decent place to screw one into the wall -- it's a fairly awkward space to work with, all things considered. Using a laptop as a dumb console is probably the cheapest solution I've seen so far (particularly since I already have a laptop to use), heh.