The old and *very* outdated vdg home page https://vdesign.kde.org/ is redirected to https://community.kde.org/Get_Involved/design for the moment. In the long run a wiki page is not the best place to showcase visual design.
First we should decide what content we want to have on the vdg home page.
I'd suggest that the homepage is a showcase for KDE's design (colors, icons, graphical style, …) with information on the guidelines of each item and links to more information and the sources. And a news section to show what's happening.
(That's what I was looking for as I went on that page the first time.)
A quick idea on the style: it could be a banner stack kind of page, where as you scroll down, you get to the next banner/section, where you have one item explained. (a bit like https://kdenlive.org/en/features/ , maybe bigger sections, being more immersive. The support Blender and subscribe (at the bottom) are more the size I am aiming for https://www.blender.org/ , with effects, buttons, subsections, … different ideas that could be interesting).
A title banner could add to the identity of the page, like here https://www.gimp.org/ , maybe replacing the purple picture with a presentation of different designs, showcasing them and showing their coherence (color themes), explicitness (icons), intuitiveness (widgets), … . Several things can be done to show the coherence of the designs (i.e.: https://snwh.org/suru , these pages look interesting too : material.io design /develop /tools /…/the-color-system.html and here for a background video : https://www.scandit.com/).