DIR Tec Diver once bubbled...
What I meant and should have communicated more clearly was the core areas such as the need for canister lights, wings/harness, isolator manifolds etc. These core or foundation areas have been well covered. We will all have much to learn about decompression, gas mixes where and when etc, but the majority of these areas are in good grasp, and we can build from them.
I should write down a little bit more of what I am thinking to not seem to be misleading or assuming something, you are completely correct that all the mistakes have not happened yet, but we can utilize the knowledge experience and results of these trials and tribulations to help us not repeat or encounter the same mistakes of others