Most of our questions will never get studied in clinical trials, I think. Most centers just don't have enough J-pouch patients to put a study together, and those few that do are conducting as much research as they have capacity for. We kind of have an orphan condition - not as rare as some, but still uncommon, and not a large impact on public health (as constrasted with something like diabetes).
There are some newer, interesting (and promising) research methods using social media and web sites much like this one to involve patients in developing research questions, gathering research subjects, and interpreting the results. It will be interesting to see how that develops.