[throwanem]

Yeah, I mean, I do exposure stacking sometimes too, when I'm goofing around trying and failing to get good at landscape photography, for example. Sure, it's a bit of extra work to produce a finished shot. But it's not so much extra work that I've ever wanted to write code against an API built into my camera to do it for me, especially not when software tools already exist that let you load a set of images and then more or less automatically stack them for you. The same is true of macro focus stacking, which is a lot more work when done by hand. And I'm a lot happier with the idea of paying $50 or $100 for an application I run on the general-purpose computer I already own to do this kind of work, than I am with the idea of cramming a general-purpose computer into a camera that will not be a better camera, and may well be a worse one, for the addition.

(I don't shoot Canon either, and yes, the homebrew firmwares are homebrew and thus not officially supported. I don't really know what effect they have on the warranty, but based on things I've heard, I think people just reflash bodies with stock firmware before shipping to the service center and it's basically fine.)

It's also worth noting that smartphones and ILCs don't compete directly any more. They never really did; once smartphones with good enough cameras to take casual snapshots and family photos started happening, ILCs were done in that market. Since then, they've been specializing toward those markets where they don't have to compete against smartphones. You're more or less suggesting that they do the opposite, and I don't know if you realize that the reason they're not already doing that is because they got murdered the last time they tried it and they're not in a hurry to get murdered again.