A user friendly distribution would be something like Fedora or Ubuntu, not "Arch but with some optimizations that probably won't matter much"
Only problem I believe is the lack of customization options in Cinnamon compared to KDE and even Gnome with extensions. I guess that makes the user miss out on some of the cool parts of owning your software. Also, being stuck in X11 will start to become a problem in the next few years: I'm waiting to see what they come up with on that front.