I don’t think Gnome-Software is that important. After all it is a Gnome/GTK only software. If it was cross and/or multiple DE friendly I would. And Antergos already come with Pamac.
Also I just give a try to Gnome-Software and it is very very very limited I couldn’t access to all the software on the Arch repos, it look like it only give Gnome/GTK softwares as a choice (no QT soft as much I can see) and only FOSS (so no Steam, Skype, etc.).
So I don’t think Gnome-Software is a good choice for Antergos.
Oh and before I forgot on your blog you’ve written this “I don’t even have to enter a password when I install an app. What is this #sorcery? Not sure about the #security implications.”
It is not norman and never occure with pamac, yaourt or pacman itself so it is not Antergos related but Gnome-Software and packagekit fault. Pamac and yaourt ask for password once and you can use them for a time and after a short time will ask it again if you need them again, and by default if you haven’t change anything in antergos you HAVE to run sudo pacman (execept while root).