BTW, I am working on ETP 2.0. See this thread here:
https://openacs.org/bboard/q-and-a-fetch-msg.tcl?msg_id=00047q&topic_id=12&topic=OpenACS%204%2e0%20DesignIf you are interested in using ETP, I would appreciate any feedback in how we can make it easier to use and extend.