Yes, we are aging ourselves here. 
Sadly, I look back with great fondness on the JJ Thompson case. That wasn't a bad case, but I felt it was a substantial step down from Everest and Thornhill. Now, though, I feel like it's the best case of the last four years by a substantial margin.
Thompson was certainly a decent case, though no Everest. I agree it is probably the best of the last four years and certainly offered opportunities for great rhetoric. My partner had a wonderful opening line about Thompson having "drink after drink after drink after drink" quickly followed by "got behind the wheel of her Jeep Grand Cherokee, license plate STR 4..."
There seems to be lots of agreement about a downward trend in case quality. Does anyone have any theories about this trend? Or are we just remembering things as better than they actually were?
Without addressing the text of the actual cases, which will take some time to think about, a disturbing trend I noticed is the over-stipulation and hyper-rule making that seems to be taking a lot out of what was offered way back when.
I certainly mean no disrecept to the Rules Committee, headed by a woman who taught me a lot about mock trial and for whom I have great affection, or the AMTA Board itself, which is staffed by devoted volunteers. And certain rule additions were especially helpful (more hearsay exceptions, prohibition on denying evidence in the case packet, constructive exclusion of witnesses, etc).
But the general trend seems to be towards reducing legal arguments, reducing attorney/team back-and-forth, and minimizing conflicts of evidence and law....It seems to push every team towards a mediocre middle regarding legal theory and denies teams the opportunity to showcase what they know and learn.
I fear mock trial is turning less into legal-minded competition and more into a dramatic interp round...just with teams.