Is Ubuntu MAAS only for Servers?
Solution 1:
Ubuntu MAAS (Metal as a Service) is what you can use to build your own version of Amazon Web Services, DigitalOcean, etc. MAAS is very much built for the datacenter1. If you are going to be performing a mass deployment of Ubuntu Desktop installations, you may want to look at the FAI Project, which allows for a fully-automatic installation of Ubuntu (and some other distributions). The documentation is incredibly thorough and the tool sees regular updates.
1 there are "consumer" versions of MAAS but, even then, it's designed for a very different purpose to desktop deployments.