It might make sense to aim to integrate this with the forthcoming
sloan-bboard as the first sample package, since everybody
seems somewhat dissatisfied with the current 4.x bboard:
https://openacs.org/bboard/q-and-a-fetch-msg.tcl?msg_id=0004gD&topic_id=11&topic=OpenACS
The other logical place to do early integration would be with
search.