Cause of V6 Transmission Failures?

To shorten a long story and quickly ask a few questions, My first
Accord V6 transmission was replaced at 50k miles. This replacement
was then replaced at 76k miles. The first trans had burned out 2nd
gear clutch packs, and the second transmission seemed to have the same
problem, but in 1st gear.

I have been told by several sources that the trans design is more like
an automatically shifted manual than a typical auto.

My questions are these:

1.) What technical explanations have people heard for the higher than
acceptible failure rate?

2.) What types of failures are others observing with their Accord V6
and related (or identical) tranmissions such as the Odyssey, CL, or
TL?

3.) What was the rumored "fix" was that supposedly fixed the 02+
transmission?

4.) Are the newer 5 speed autos in the Pilot, Odyssey, Accord, CL, and
TL any better than the 4 speeds they replaced, or did they just slap
an extra gear in an essentially similar transmission?

Thanks!