Site settings do that now, but the description of the setting still links to the list of FA6 icons (not 7, and the filter to only return free icons doesn’t work either).
But I am not sure this currently feels like an improvement to me. It’s quite confusing that you cannot enter all the icons you find by following the link. Before, I could enter “clipboard-question” and add it to svg_icons_subset afterwards. Now, if I want to configure a new icon, I need to leave the setting I want to set up, navigate to the other one, add the new icon, and get back to the setting I wanted to configure.
So the dropdown setting did not really change anything about the problem that there needs to be a link where you find all available icons, and this link needs to be updated on all settings whenever something changes.