Ok, I reread this request and Auto-connect custom GTK themes to gtk-3-themes, gtk-2-themes and icon-themes.
For this request, I’m +1 to add greedy plugs to gtk-common-themes and +1 to allows auto-connect with greedy plugs to gtk-theme-traditionalhumanized.
The review-tools checks are not in place (see Theme Connector For Snaps classic confinement) so please don’t make updates to suggest auto-downloading theme snaps.
2 votes for, 0 against. This is now live (for both).