I have no problem with giving people a "Next-Next-Finish installer", but the system they get should reflect that. With Manjaro you do get quite a quirky distro and while the AUR is great, it is also a good way to create a very unstable system, especially when your system doesn't even use the Arch packages. This leaves the user quite exposed if anything should ever fail.

To be honest I think most people are better served with other distros, because they tend to deliver them the experience they actually want.