I have not read much of the thread. But I am going to answer the original question and perhaps my experience is different than other people's....or, maybe not.
About 6 years ago I was using a TB composite blade and I was hitting with a friend. We swapped so I could feel his setup and it was all wood and the blade felt sooooooo good and I remembered what I liked about the feeling of a good all wood blade. I switched to a 5 ply all wood blade and I have not looked back. I tried several when I switched. I have a few I could use. But I really like the one I chose. It was an OSP Virtuoso Plus. I tried the V-, I tried the V'King (koto outer) and a bunch of other blades. But I really liked the Virtuoso Plus. Recently Nate made me a blade that is very similar to the V+ and I use those two interchangeably now.
I have not looked back for one moment. I like what I am using.
Table Tennis is a game/sport of precision and technique. Your timing, how you touch the ball, the speed of the racket on contact, these things are the things that matter the most. I played baseball as a kid. I feel like I can hit the ball damned hard when I want to. The equipment does not slow me down. And when you are really using the rubber with tangential contact, the blade does not factor that much in the speed. So, I am not really sure my shots are much slower than if I used a carbon blade. And I did not switch the wood because I could not handle the composite blade. I just like the feeling of the wood better. But, for sure, I get more spin with the all wood blade.
Technique and power: I have one friend who was a pro tennis player who also plays TT and one time I was training with him and another friend of mine was watching and said, "hey, he has more power than you!" I said that should not be a surprise. This guy was a pro tennis player and he was also a pretty solid TT player.
I have another friend who was a pro tennis player who was also a darn good TT player.....this guy is notably higher level than the other guy....and he used to use a Stiga Allround Classic because it was really slow. Even with this slow blade, this guy hit the ball with so much power that he did not want a faster blade because it would be too much despite the fact that he had really darn good technique. This guy was about 2400 level. But with that slow blade, he still hit harder than most 2500-2700 level TT players in the US.
What is the point: a table tennis ball is actually REALLY REALLY light and most people who are lower than 2000 level (USTTA rating - which is most of the forum) are limiting their ability to learn how to really fine tune their technique and generate more power by using equipment that is fast enough so that they actually need to cut down their swing to control the ball.
If your technique is good, you can take a stroke that is very compact, 3-6 inches long (7.6cm-15.2cm) and still have the racket speed, impact depth and touch/feel on contact to make the ball rocket towards your opponent with speed and spin (power).
The equipment does not do that. Your technique does. Now, it is fair that everyone can choose what they want to use. But it is common that players don't really know how to judge what will be good for them.
I applaud the idea of a player switching to an all wood setup to see if they can really focus on improving their technique.