wow, you named quite a few additional advancements which were not on my short list. In general, I agree with you and I think since we have taken nice photos in the past be it on film or on DSLR cameras, we can categorise these features as nice to have. Clean High ISO capabilities and so called ISO invariant sensors is definitely in the top of my list! Thank you for pointing it out.For me the biggest technology game changer predates mirrorless with incredible high ISO performance. Available light shots that were pretty much inconceivable in the film and early DSLR days are commonplace and support things like very fast shutter speed for action in softer light. That and advanced AF system performance including both speedy acquisition and tracking both across the frame but also improved tracking of fast moving subjects across distance which really started to shine in late generation DSLRs and just keeps getting better with mirrorless technology.
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So many great new features it's hard to count and I really like having things like much better control customization, built in auto capture is fun, precapture sounds great and if it's extended to raw captures I'll probably make use of it, built in focus stack shooting is pretty nice for macro and even some landscape work, focus peaking in manual focus mode is pretty handy at times and the stuff mentioned above is pretty great. I guess like a lot of technology the sum of all those advancements is greater than the individual features and no doubt modern cameras are pretty incredible tools.