#ZFS is nice. I've had it, with full root-on-ZFS, since PC-BSD. It took me several years to actually realize how nice it was.
If you want something more arcane than #FreeBSD to play with, take a look at #Illumos, in particular its derivatives #OpenSolaris, #OmniOS, #SmartOS, and @ptribble 's #Tribblix.
Illumos has original Joy+Horton #vi (not one of the clones), the SMF, zones, ZFS, and a fair number of System 5isms not in the BSD world (e.g. sar, which @rl_dane was talking about the other day).
You need a paper terminal for the complete experience, remember. (-:
@passthejoe @frobozz @JdeBP @gumnos
I dunno, I have a vague impression of the #WYSE terminals being "weird," but it's been a quarter century.
Some of the later DEC VTs were dinky, but that #VT100 was LEGEND-STATUS classic. 😄
I literally remember seeing them in pictures and wondering "What is that groovy curved-looking computer??" and only years later learning that that was the ORIGINAL VT100.
I'd lose my mind to be able to play with one of those sweet machines.
I'd like to get my hands on a VT525 one day, to see how badly modern TUI softwares work with one.
Of course, that sort of curiosity doesn't justify the expense and risk.
That thing about the VT100, by the way, is likely what Thomas Dickey (and others) have been pointing out for donkeys's years. VT1xxs didn't do colour; and people weren't imitating/expecting the VT102, let alone the VT100. They were imitating/expecting AIXterm.