Room treatment doesn't always have to be audiophile looking. Rugs, wall tapestries, and curtains count too.
Oh I agree fully... "passive" room treatments as such are much preferable to sound-absorbing pillars and fiberglass wall-panels.
SO, I have good news (or bad news, depending on perspective) about my friend's audioplans...
I
think that I may have swayed him towards a tube integrated amp! To use with some nice well-designed Brit-fi sources, of course. After explaining that many fine amps don't require manual biasing, and that many actually have user-friendly features like remote volume controls, he feels comfortable going that direction, and appreciates the sonic advantages (well, differences

). Probably something along the lines of an Eastern Electric M520. Then pick some speakers more on the tube-friendly side of things. Sorry if I'm disappointing any of the solid-state fans out there

... I do welcome any counter-arguments from Solid-Staters.