To each his own. I had a phase of emulating the classic W2K look, but like W95/98/ME all of this it feels too dark, dirty greyish for me now. Still in times of late KDE3 I then switched to https://store.kde.org/p/1100735/ but with different more colorful (soft pastel) icons which I can't remember the name of anymore, later then to https://en.wikipedia.org/wiki/Bluecurve , but not like the ugly default depicted there. It could be customized to a mix of that Reinhardt style and Microsofts 'dot.net' style, still using the forgotten soft pastel icons. Which would then be applied to apps for other toolkits as well. Very consistent. I like consistency.

Meanwhile, Plasmas Breeze (light) does all of that for me, again. One could maybe depart from the breeze window decorations, and exchange them for 'Klassy', they can 'fit', there is much to change, chose from. I'm trying them out at the moment. The thing with Breeze is, many other apps have presets for that also, like LibreOffice, which leads to even more visual consistency :-)

My desktop is blank, a mix between soft pastel yellow and 'manila' paper. No icons, widgets, clocks, weather. I don't care about CPU or Network speed there. I wouldn't see them anyway, since I tend to have windows maximized. If something would be wrong Kget or Ktorrent would make themselves known, which they won't ;-> CPU speeds suffice, even if mostly clocked down to 800Mhz :-)

My 'taskbar' is at the top, only 24px high. I switch between 3 by 3 virtual desktops by either using that too small (for that arrangement, it should grow a little when hovering the pointer over it) widget in the taskbar, or by jamming the mousepointer into one of the four corners, which makes that 'expose'-like thing appear.