It's amazing that you seem to have your pulse on the heartbeat of the photographic world but yet you've totally ignored what most on here have said. The longevity is just a bonus to the majority on here. Developers are cheap and I don't think there's many starving students on this site, yet they love the look of Rodinal and have said so in many different ways. I think you really need to start learning from others because you are missing the boat by a mile.
In answer to your question about trying other developers in the same class the answer would be no. I've only tried Rodinal, D-76, X-tol and Accufine. But the one thing that I noticed about this site is that most are chemical freaks and have tried many developers, films and different combinations. Yet you chose to just brush their opinions aside. Why is this? Why are you trying to tell these intelligent, committed people what they are really feeling about Rodinal?