The Full Frame and above DLSR market is not really shrinking though. It's certainly not a huge market, but it's ripe for disruption since the pace of innovation of the current incumbents is very, very slow.

The DSLR market is shrinking, simply because everyone who wants one already has one and there are no compelling reasons to upgrade. There was a golden period of a few years where if you wanted a decent camera a DSLR was the best option, so the market expanded quickly. Those days are over.

Adding the features identified in the post would cure the "no reason to upgrade" problem, at least temporarily. But the market for serious cameras is pretty much fixed and easily saturated.

I was talking about "Full frame and above" please don't just my comment about DSLRs in general. APS-C size sensors DSLRs do not fit in my description, and that is the category that is shrinking the most.

OK, that may be true. But I propose that it's still a temporary situation, as APS-C DSLR users upgrade. The larger sensor camera market will saturate as well.