Had a special request vegetarian meal on my most recent trip. QF71 on the way out was pretty decent, included a cous-cous salad with some charred vegetables and a lemon-y sauce. Followed by a yellow Thai curry for main. It was an enjoyable meal.
QF72 coming back a week later was...not great. Food was OK, but the meal was once again a victim of extraordinarily slow service in the J cabin. Whether they have not enough staff or not enough equipment on the A332s I don't know, but it just takes forever. We pushed back at 8pm, and I wasn't eating until well after 10pm. The entree for this flight was a Greek salad, which looked like the green leaves plus a few extra bits. I wasn't super impressed at the choice, but the salad itself was nice enough. Then the mains was some sort of potato + Mexican chili concoction that was OK.
No photos unfortunately. Normally I don't bother with requesting the vegetarian meal as there are enough vegetarian options on the international flights for Qantas. However, as I was connecting to/from flights with JAL I didn't want to take that chance. Next time I wouldn't bother with the JAL request, their vegetarian breakfast meal options were not inspiring - I'd rather just get the extra sleep.