CEDET should provide a default configuration. I think many people are using Alexott's configuration: https://github.com/alexott/emacs-configs/blob/master/rc/emacs-rc-cedet.el (myself including), so I hope that it will get incorporated into future CEDET as well. It should only take a function to setup, and if they want to further customize (i.e. integration with Ctags, Cscope...) then there should be a short and simple guide for adding relevant features.