I'd personally rather just do a streamer. If we're going to go through the trouble, might as well make it worth making. And no, we are not doing a streamer.
You hit on the low points of this: try to accommodate a wide variety of stuff? Nightmare. And what about the new stuff? And what about stuff that doesn't quite fit? Suddenly all of those are your problems. What about taking something back after it didn't quite fit? Another nightmare. Dealing with people complaining you're selling an overpriced box because you can't sell it for the same price as the LLOURTSHAN-brand direct-from-China Amazon specials selling 5 different color boxes for $5.99? (And no I'm not crapping on them, there's a place for that, **** you Apple for wanting $100 for a fabric watch band that lasts less than a year.) But yeah, more nightmares, not for us.
Best to just get a Mac Mini.