the emacs/ dirs mostly contain eye candy, like coloring for the (def function foo ...) syntax, or the coloring stuff in hu.dwim.syntax. it's nice to have them loaded, but none of them are mandatory for anything.
also, projectured doesn't use much of the hu.dwim world, it was one of the design goals to keep it simple, so that in case of a bootstrap, or a hand-written port, it's easy to produce e.g. a scheme version.
hu.dwim.environment/emacs/dwim-init.el also has some stuff, but again, mostly only subjective customizations.
HTH,
- attila