I am sure that most of the "veterans" on this board are quite aware of the S/B's on those models. But a S/B does not necessarily mean that it could apply to your van (some do, though). I currently have a '01 with about 13.6K miles on it, I had the transmission solenoid replaced early on, more as a precaution than a failure. So far so good. As for Honda switching to the 5 speed, maybe they wanted a competitive advantage? (The '02 MPV is coming out with a 5 speed tranny, the Kia Sedona also has one.) Honda fortunately does not take the "if it ain't broke, don't fix it" mentality.
Now, may I ask what year Ody you have? Are you a prospective buyer? Rest assured that there are many satisfied Ody owners out here who would be happy to help with information. However, this forum has been seeing many new posters lately, many of them with complaints for their first postings. Some are valid while others are just plain slander. Good day.