Just thought Duane's recent post might have some relevance to Typo: http://thread.gmane.org/gmane.comp.lang.ruby.rails/14513
Might be a good way to keep Typo core separate from from site-specific customisations... though it would quickly become unmaintainable if people are overriding things willy-nilly. Nothing can replace a set of well thought-out and documented extension points. - tim lucas
