One of the questions I often see posed on CMS forums is something to the effect of “does it have a lot of modules?” I would tend to prefer a CMS where I can do what I want with as few modules as possible.

And I don’t mean that all the functionality for the CMS is crammed into fewer modules… I just mean I want the modules in a base installation to be powerful & flexible enough to perform a wide variety of content management tasks. That to me is better than a CMS where there are hundreds of extensions I can add.

Why would I care if something has 150 modules or 1500 modules? I’d rather not learn more than 20 or so if I can help it. The more modules you use, the more likely it is that you’re going to run into bugs or use something that isn’t well supported. Also, in the event that someone else needs to take over your work on a project, it’s easier to find someone who is familiar with the core modules and a few others.