You say that well documented architectures are a good thing. Makes sense. For us lesser minded gerbils... why? What problem does this solve?
So that greater-minded gerbils can tell you whats good and bad.
Gen11 looks good overall for an iGPU. It fixes a lot of the issues with Gen9 (shared memory was in L3, but now its faster and more local according to the docs. That's great!!). Honestly, its a better architecture than I expected, so its reasonably exciting to see.
Obviously, wait for benchmarks. But I'm personally optimistic about this.