I kinda wish they would come in one package together too.

You may be able to find themed meta packages (single packages that install a suite of related features) for this, depending what you're looking for.

Lately, I have been confused because I was looking for Gnome add-ons for features that vwere already included but just toggled off.

I now find that most of what I want, as a power user, is a quick settings search and then a toggle button.

The general dividng line, lately, in Gnome, is that plugins may still have bugs, while built-in features tend to be very reliable. Most of what PowerToys contains (that I care about) is just a settings toggle in Gnome. A notable exception is Window tiling, which I use a plugin for.